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Finding the Fourth Proportional to 87,240.02, 130,269.05 and 69,269.02

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Solution

The fourth proportional to 87,240.02, 130,269.05 and 69,269.02 is: 103,434.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,240.02 : 130,269.05 = 69,269.02 : x
  2. Step 2: Convert to fraction form
    87,240.02/130,269.05 = 69,269.02/x
  3. Step 3: Cross multiply
    87,240.02x = 130,269.05 × 69,269.02
  4. Step 4: Simplify right side
    87,240.02x = 9,023,609,017.57
  5. Step 5: Solve for x
    x = 9,023,609,017.57/87,240.02
  6. Step 6: Final answer
    x = 103,434.29

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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.