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Finding the Fourth Proportional to 60,488.40, 90,720.76 and 57,487.88

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Solution

The fourth proportional to 60,488.40, 90,720.76 and 57,487.88 is: 86,220.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,488.40 : 90,720.76 = 57,487.88 : x
  2. Step 2: Convert to fraction form
    60,488.40/90,720.76 = 57,487.88/x
  3. Step 3: Cross multiply
    60,488.40x = 90,720.76 × 57,487.88
  4. Step 4: Simplify right side
    60,488.40x = 5,215,344,164.39
  5. Step 5: Solve for x
    x = 5,215,344,164.39/60,488.40
  6. Step 6: Final answer
    x = 86,220.57

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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.