Home / 87,630.14-131,445.20-21,070.26

Finding the Fourth Proportional to 87,630.14, 131,445.20 and 21,070.26

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Solution

The fourth proportional to 87,630.14, 131,445.20 and 21,070.26 is: 31,605.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,630.14 : 131,445.20 = 21,070.26 : x
  2. Step 2: Convert to fraction form
    87,630.14/131,445.20 = 21,070.26/x
  3. Step 3: Cross multiply
    87,630.14x = 131,445.20 × 21,070.26
  4. Step 4: Simplify right side
    87,630.14x = 2,769,584,434.40
  5. Step 5: Solve for x
    x = 2,769,584,434.40/87,630.14
  6. Step 6: Final answer
    x = 31,605.39

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1.5x scale

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.