Home / 87,387.21-130,989.91-59,309.55

Finding the Fourth Proportional to 87,387.21, 130,989.91 and 59,309.55

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Solution

The fourth proportional to 87,387.21, 130,989.91 and 59,309.55 is: 88,902.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,387.21 : 130,989.91 = 59,309.55 : x
  2. Step 2: Convert to fraction form
    87,387.21/130,989.91 = 59,309.55/x
  3. Step 3: Cross multiply
    87,387.21x = 130,989.91 × 59,309.55
  4. Step 4: Simplify right side
    87,387.21x = 7,768,952,616.64
  5. Step 5: Solve for x
    x = 7,768,952,616.64/87,387.21
  6. Step 6: Final answer
    x = 88,902.63

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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.