Home / 84,724.48-127,129.56-40,342.96

Finding the Fourth Proportional to 84,724.48, 127,129.56 and 40,342.96

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Solution

The fourth proportional to 84,724.48, 127,129.56 and 40,342.96 is: 60,534.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,724.48 : 127,129.56 = 40,342.96 : x
  2. Step 2: Convert to fraction form
    84,724.48/127,129.56 = 40,342.96/x
  3. Step 3: Cross multiply
    84,724.48x = 127,129.56 × 40,342.96
  4. Step 4: Simplify right side
    84,724.48x = 5,128,782,753.90
  5. Step 5: Solve for x
    x = 5,128,782,753.90/84,724.48
  6. Step 6: Final answer
    x = 60,534.84

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1.5x scale

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.