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Finding the Fourth Proportional to 87,354, 131,625.90 and 77,806.08

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Solution

The fourth proportional to 87,354, 131,625.90 and 77,806.08 is: 117,239.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,354 : 131,625.90 = 77,806.08 : x
  2. Step 2: Convert to fraction form
    87,354/131,625.90 = 77,806.08/x
  3. Step 3: Cross multiply
    87,354x = 131,625.90 × 77,806.08
  4. Step 4: Simplify right side
    87,354x = 10,241,295,305.47
  5. Step 5: Solve for x
    x = 10,241,295,305.47/87,354
  6. Step 6: Final answer
    x = 117,239.00

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.