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Finding the Fourth Proportional to 87,348.30, 130,828.05 and 75,684.30

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Solution

The fourth proportional to 87,348.30, 130,828.05 and 75,684.30 is: 113,358.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,348.30 : 130,828.05 = 75,684.30 : x
  2. Step 2: Convert to fraction form
    87,348.30/130,828.05 = 75,684.30/x
  3. Step 3: Cross multiply
    87,348.30x = 130,828.05 × 75,684.30
  4. Step 4: Simplify right side
    87,348.30x = 9,901,629,384.62
  5. Step 5: Solve for x
    x = 9,901,629,384.62/87,348.30
  6. Step 6: Final answer
    x = 113,358.01

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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.