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Finding the Fourth Proportional to 87,590.80, 130,906.25 and 63,948.16

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Solution

The fourth proportional to 87,590.80, 130,906.25 and 63,948.16 is: 95,571.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,590.80 : 130,906.25 = 63,948.16 : x
  2. Step 2: Convert to fraction form
    87,590.80/130,906.25 = 63,948.16/x
  3. Step 3: Cross multiply
    87,590.80x = 130,906.25 × 63,948.16
  4. Step 4: Simplify right side
    87,590.80x = 8,371,213,820
  5. Step 5: Solve for x
    x = 8,371,213,820/87,590.80
  6. Step 6: Final answer
    x = 95,571.84

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1.5x scale

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.