Home / 87,430.10-131,142.03-28,264.22

Finding the Fourth Proportional to 87,430.10, 131,142.03 and 28,264.22

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Solution

The fourth proportional to 87,430.10, 131,142.03 and 28,264.22 is: 42,395.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,430.10 : 131,142.03 = 28,264.22 : x
  2. Step 2: Convert to fraction form
    87,430.10/131,142.03 = 28,264.22/x
  3. Step 3: Cross multiply
    87,430.10x = 131,142.03 × 28,264.22
  4. Step 4: Simplify right side
    87,430.10x = 3,706,626,531.46
  5. Step 5: Solve for x
    x = 3,706,626,531.46/87,430.10
  6. Step 6: Final answer
    x = 42,395.32

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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.