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Finding the Fourth Proportional to 84,739.20, 127,060.80 and 32,150.40

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Solution

The fourth proportional to 84,739.20, 127,060.80 and 32,150.40 is: 48,207.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,739.20 : 127,060.80 = 32,150.40 : x
  2. Step 2: Convert to fraction form
    84,739.20/127,060.80 = 32,150.40/x
  3. Step 3: Cross multiply
    84,739.20x = 127,060.80 × 32,150.40
  4. Step 4: Simplify right side
    84,739.20x = 4,085,055,544.32
  5. Step 5: Solve for x
    x = 4,085,055,544.32/84,739.20
  6. Step 6: Final answer
    x = 48,207.39

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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.