Home / 72,323,689,739.52-99,808,854,335.64-39,769,212,339.12

Finding the Fourth Proportional to 72,323,689,739.52, 99,808,854,335.64 and 39,769,212,339.12

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Solution

The fourth proportional to 72,323,689,739.52, 99,808,854,335.64 and 39,769,212,339.12 is: 54,882,702,136.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,323,689,739.52 : 99,808,854,335.64 = 39,769,212,339.12 : x
  2. Step 2: Convert to fraction form
    72,323,689,739.52/99,808,854,335.64 = 39,769,212,339.12/x
  3. Step 3: Cross multiply
    72,323,689,739.52x = 99,808,854,335.64 × 39,769,212,339.12
  4. Step 4: Simplify right side
    72,323,689,739.52x = 3,969,319,521,398,365,356,032
  5. Step 5: Solve for x
    x = 3,969,319,521,398,365,356,032/72,323,689,739.52
  6. Step 6: Final answer
    x = 54,882,702,136.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.