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Finding the Fourth Proportional to 40,602.71, 60,903.40 and 12,139.73

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Solution

The fourth proportional to 40,602.71, 60,903.40 and 12,139.73 is: 18,209.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,602.71 : 60,903.40 = 12,139.73 : x
  2. Step 2: Convert to fraction form
    40,602.71/60,903.40 = 12,139.73/x
  3. Step 3: Cross multiply
    40,602.71x = 60,903.40 × 12,139.73
  4. Step 4: Simplify right side
    40,602.71x = 739,350,771.38
  5. Step 5: Solve for x
    x = 739,350,771.38/40,602.71
  6. Step 6: Final answer
    x = 18,209.39

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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.