Home / 87,564.78-131,367.93-28,400.46

Finding the Fourth Proportional to 87,564.78, 131,367.93 and 28,400.46

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Solution

The fourth proportional to 87,564.78, 131,367.93 and 28,400.46 is: 42,607.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,564.78 : 131,367.93 = 28,400.46 : x
  2. Step 2: Convert to fraction form
    87,564.78/131,367.93 = 28,400.46/x
  3. Step 3: Cross multiply
    87,564.78x = 131,367.93 × 28,400.46
  4. Step 4: Simplify right side
    87,564.78x = 3,730,909,641.25
  5. Step 5: Solve for x
    x = 3,730,909,641.25/87,564.78
  6. Step 6: Final answer
    x = 42,607.42

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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.