Home / 72,321,228.16-99,804,027.36-39,282,122.50

Finding the Fourth Proportional to 72,321,228.16, 99,804,027.36 and 39,282,122.50

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Solution

The fourth proportional to 72,321,228.16, 99,804,027.36 and 39,282,122.50 is: 54,209,726.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,321,228.16 : 99,804,027.36 = 39,282,122.50 : x
  2. Step 2: Convert to fraction form
    72,321,228.16/99,804,027.36 = 39,282,122.50/x
  3. Step 3: Cross multiply
    72,321,228.16x = 99,804,027.36 × 39,282,122.50
  4. Step 4: Simplify right side
    72,321,228.16x = 3,920,514,028,748,871.50
  5. Step 5: Solve for x
    x = 3,920,514,028,748,871.50/72,321,228.16
  6. Step 6: Final answer
    x = 54,209,726.92

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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.