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Finding the Fourth Proportional to 84,357.64, 126,488.53 and 34,379.20

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Solution

The fourth proportional to 84,357.64, 126,488.53 and 34,379.20 is: 51,549.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,357.64 : 126,488.53 = 34,379.20 : x
  2. Step 2: Convert to fraction form
    84,357.64/126,488.53 = 34,379.20/x
  3. Step 3: Cross multiply
    84,357.64x = 126,488.53 × 34,379.20
  4. Step 4: Simplify right side
    84,357.64x = 4,348,574,470.58
  5. Step 5: Solve for x
    x = 4,348,574,470.58/84,357.64
  6. Step 6: Final answer
    x = 51,549.27

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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.