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Finding the Fourth Proportional to 87,167.40, 130,751.10 and 23,987.40

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Solution

The fourth proportional to 87,167.40, 130,751.10 and 23,987.40 is: 35,981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,167.40 : 130,751.10 = 23,987.40 : x
  2. Step 2: Convert to fraction form
    87,167.40/130,751.10 = 23,987.40/x
  3. Step 3: Cross multiply
    87,167.40x = 130,751.10 × 23,987.40
  4. Step 4: Simplify right side
    87,167.40x = 3,136,378,936.14
  5. Step 5: Solve for x
    x = 3,136,378,936.14/87,167.40
  6. Step 6: Final answer
    x = 35,981.10

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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.