Home / 72,206.16-99,646.77-40,374.98

Finding the Fourth Proportional to 72,206.16, 99,646.77 and 40,374.98

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Solution

The fourth proportional to 72,206.16, 99,646.77 and 40,374.98 is: 55,718.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,206.16 : 99,646.77 = 40,374.98 : x
  2. Step 2: Convert to fraction form
    72,206.16/99,646.77 = 40,374.98/x
  3. Step 3: Cross multiply
    72,206.16x = 99,646.77 × 40,374.98
  4. Step 4: Simplify right side
    72,206.16x = 4,023,235,847.58
  5. Step 5: Solve for x
    x = 4,023,235,847.58/72,206.16
  6. Step 6: Final answer
    x = 55,718.73

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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.