Home / 81,024.40-121,608.60-47,702.80

Finding the Fourth Proportional to 81,024.40, 121,608.60 and 47,702.80

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Solution

The fourth proportional to 81,024.40, 121,608.60 and 47,702.80 is: 71,596.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,024.40 : 121,608.60 = 47,702.80 : x
  2. Step 2: Convert to fraction form
    81,024.40/121,608.60 = 47,702.80/x
  3. Step 3: Cross multiply
    81,024.40x = 121,608.60 × 47,702.80
  4. Step 4: Simplify right side
    81,024.40x = 5,801,070,724.08
  5. Step 5: Solve for x
    x = 5,801,070,724.08/81,024.40
  6. Step 6: Final answer
    x = 71,596.59

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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.