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Finding the Fourth Proportional to 87,541.70, 130,479.80 and 82,558.98

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Solution

The fourth proportional to 87,541.70, 130,479.80 and 82,558.98 is: 123,053.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,541.70 : 130,479.80 = 82,558.98 : x
  2. Step 2: Convert to fraction form
    87,541.70/130,479.80 = 82,558.98/x
  3. Step 3: Cross multiply
    87,541.70x = 130,479.80 × 82,558.98
  4. Step 4: Simplify right side
    87,541.70x = 10,772,278,785.81
  5. Step 5: Solve for x
    x = 10,772,278,785.81/87,541.70
  6. Step 6: Final answer
    x = 123,053.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.