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Finding the Fourth Proportional to 60,507.62, 90,761.88 and 21,064.64

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Solution

The fourth proportional to 60,507.62, 90,761.88 and 21,064.64 is: 31,597.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,507.62 : 90,761.88 = 21,064.64 : x
  2. Step 2: Convert to fraction form
    60,507.62/90,761.88 = 21,064.64/x
  3. Step 3: Cross multiply
    60,507.62x = 90,761.88 × 21,064.64
  4. Step 4: Simplify right side
    60,507.62x = 1,911,866,327.92
  5. Step 5: Solve for x
    x = 1,911,866,327.92/60,507.62
  6. Step 6: Final answer
    x = 31,597.12

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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.