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Finding the Fourth Proportional to 40,359, 60,548.24 and 12,657

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Solution

The fourth proportional to 40,359, 60,548.24 and 12,657 is: 18,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,359 : 60,548.24 = 12,657 : x
  2. Step 2: Convert to fraction form
    40,359/60,548.24 = 12,657/x
  3. Step 3: Cross multiply
    40,359x = 60,548.24 × 12,657
  4. Step 4: Simplify right side
    40,359x = 766,359,073.68
  5. Step 5: Solve for x
    x = 766,359,073.68/40,359
  6. Step 6: Final answer
    x = 18,988.55

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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.