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Finding the Fourth Proportional to 60,654.60, 90,884.70 and 38,428.20

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Solution

The fourth proportional to 60,654.60, 90,884.70 and 38,428.20 is: 57,580.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,654.60 : 90,884.70 = 38,428.20 : x
  2. Step 2: Convert to fraction form
    60,654.60/90,884.70 = 38,428.20/x
  3. Step 3: Cross multiply
    60,654.60x = 90,884.70 × 38,428.20
  4. Step 4: Simplify right side
    60,654.60x = 3,492,535,428.54
  5. Step 5: Solve for x
    x = 3,492,535,428.54/60,654.60
  6. Step 6: Final answer
    x = 57,580.72

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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.