Home / 82,478.68-123,730.20-29,875.90

Finding the Fourth Proportional to 82,478.68, 123,730.20 and 29,875.90

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Solution

The fourth proportional to 82,478.68, 123,730.20 and 29,875.90 is: 44,818.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,478.68 : 123,730.20 = 29,875.90 : x
  2. Step 2: Convert to fraction form
    82,478.68/123,730.20 = 29,875.90/x
  3. Step 3: Cross multiply
    82,478.68x = 123,730.20 × 29,875.90
  4. Step 4: Simplify right side
    82,478.68x = 3,696,551,082.18
  5. Step 5: Solve for x
    x = 3,696,551,082.18/82,478.68
  6. Step 6: Final answer
    x = 44,818.26

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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.