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Finding the Fourth Proportional to 89,916.71, 134,957.87 and 45,574.88

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Solution

The fourth proportional to 89,916.71, 134,957.87 and 45,574.88 is: 68,404.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,916.71 : 134,957.87 = 45,574.88 : x
  2. Step 2: Convert to fraction form
    89,916.71/134,957.87 = 45,574.88/x
  3. Step 3: Cross multiply
    89,916.71x = 134,957.87 × 45,574.88
  4. Step 4: Simplify right side
    89,916.71x = 6,150,688,502.43
  5. Step 5: Solve for x
    x = 6,150,688,502.43/89,916.71
  6. Step 6: Final answer
    x = 68,404.29

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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.