Home / 40,285.40-60,428.10-29,139.80

Finding the Fourth Proportional to 40,285.40, 60,428.10 and 29,139.80

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Solution

The fourth proportional to 40,285.40, 60,428.10 and 29,139.80 is: 43,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,285.40 : 60,428.10 = 29,139.80 : x
  2. Step 2: Convert to fraction form
    40,285.40/60,428.10 = 29,139.80/x
  3. Step 3: Cross multiply
    40,285.40x = 60,428.10 × 29,139.80
  4. Step 4: Simplify right side
    40,285.40x = 1,760,862,748.38
  5. Step 5: Solve for x
    x = 1,760,862,748.38/40,285.40
  6. Step 6: Final answer
    x = 43,709.70

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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.