Home / 74,149.90-102,327.17-40,158.79

Finding the Fourth Proportional to 74,149.90, 102,327.17 and 40,158.79

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Solution

The fourth proportional to 74,149.90, 102,327.17 and 40,158.79 is: 55,419.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,149.90 : 102,327.17 = 40,158.79 : x
  2. Step 2: Convert to fraction form
    74,149.90/102,327.17 = 40,158.79/x
  3. Step 3: Cross multiply
    74,149.90x = 102,327.17 × 40,158.79
  4. Step 4: Simplify right side
    74,149.90x = 4,109,334,874.71
  5. Step 5: Solve for x
    x = 4,109,334,874.71/74,149.90
  6. Step 6: Final answer
    x = 55,419.29

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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.