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Finding the Fourth Proportional to 40,139.97, 60,218.76 and 13,484.99

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Solution

The fourth proportional to 40,139.97, 60,218.76 and 13,484.99 is: 20,230.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,139.97 : 60,218.76 = 13,484.99 : x
  2. Step 2: Convert to fraction form
    40,139.97/60,218.76 = 13,484.99/x
  3. Step 3: Cross multiply
    40,139.97x = 60,218.76 × 13,484.99
  4. Step 4: Simplify right side
    40,139.97x = 812,049,376.41
  5. Step 5: Solve for x
    x = 812,049,376.41/40,139.97
  6. Step 6: Final answer
    x = 20,230.44

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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.