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Finding the Fourth Proportional to 84,490.20, 126,750.60 and 40,116.60

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Solution

The fourth proportional to 84,490.20, 126,750.60 and 40,116.60 is: 60,182.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,490.20 : 126,750.60 = 40,116.60 : x
  2. Step 2: Convert to fraction form
    84,490.20/126,750.60 = 40,116.60/x
  3. Step 3: Cross multiply
    84,490.20x = 126,750.60 × 40,116.60
  4. Step 4: Simplify right side
    84,490.20x = 5,084,803,119.96
  5. Step 5: Solve for x
    x = 5,084,803,119.96/84,490.20
  6. Step 6: Final answer
    x = 60,182.16

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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.