Home / 78,331.20-117,496.80-47,227.20

Finding the Fourth Proportional to 78,331.20, 117,496.80 and 47,227.20

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Solution

The fourth proportional to 78,331.20, 117,496.80 and 47,227.20 is: 70,840.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,331.20 : 117,496.80 = 47,227.20 : x
  2. Step 2: Convert to fraction form
    78,331.20/117,496.80 = 47,227.20/x
  3. Step 3: Cross multiply
    78,331.20x = 117,496.80 × 47,227.20
  4. Step 4: Simplify right side
    78,331.20x = 5,549,044,872.96
  5. Step 5: Solve for x
    x = 5,549,044,872.96/78,331.20
  6. Step 6: Final answer
    x = 70,840.80

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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.