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Finding the Fourth Proportional to 87,098.52, 130,647.84 and 57,509.40

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Solution

The fourth proportional to 87,098.52, 130,647.84 and 57,509.40 is: 86,264.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,098.52 : 130,647.84 = 57,509.40 : x
  2. Step 2: Convert to fraction form
    87,098.52/130,647.84 = 57,509.40/x
  3. Step 3: Cross multiply
    87,098.52x = 130,647.84 × 57,509.40
  4. Step 4: Simplify right side
    87,098.52x = 7,513,478,889.70
  5. Step 5: Solve for x
    x = 7,513,478,889.70/87,098.52
  6. Step 6: Final answer
    x = 86,264.14

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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.