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Finding the Fourth Proportional to 60,690.60, 90,938.70 and 38,464.20

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Solution

The fourth proportional to 60,690.60, 90,938.70 and 38,464.20 is: 57,634.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,690.60 : 90,938.70 = 38,464.20 : x
  2. Step 2: Convert to fraction form
    60,690.60/90,938.70 = 38,464.20/x
  3. Step 3: Cross multiply
    60,690.60x = 90,938.70 × 38,464.20
  4. Step 4: Simplify right side
    60,690.60x = 3,497,884,344.54
  5. Step 5: Solve for x
    x = 3,497,884,344.54/60,690.60
  6. Step 6: Final answer
    x = 57,634.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.