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Finding the Fourth Proportional to 60,320.88, 90,487.48 and 20,877.89

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Solution

The fourth proportional to 60,320.88, 90,487.48 and 20,877.89 is: 31,318.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,320.88 : 90,487.48 = 20,877.89 : x
  2. Step 2: Convert to fraction form
    60,320.88/90,487.48 = 20,877.89/x
  3. Step 3: Cross multiply
    60,320.88x = 90,487.48 × 20,877.89
  4. Step 4: Simplify right side
    60,320.88x = 1,889,187,149.19
  5. Step 5: Solve for x
    x = 1,889,187,149.19/60,320.88
  6. Step 6: Final answer
    x = 31,318.96

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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.