Home / 84,240.52-126,339.18-39,855.40

Finding the Fourth Proportional to 84,240.52, 126,339.18 and 39,855.40

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Solution

The fourth proportional to 84,240.52, 126,339.18 and 39,855.40 is: 59,772.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,240.52 : 126,339.18 = 39,855.40 : x
  2. Step 2: Convert to fraction form
    84,240.52/126,339.18 = 39,855.40/x
  3. Step 3: Cross multiply
    84,240.52x = 126,339.18 × 39,855.40
  4. Step 4: Simplify right side
    84,240.52x = 5,035,298,554.57
  5. Step 5: Solve for x
    x = 5,035,298,554.57/84,240.52
  6. Step 6: Final answer
    x = 59,772.88

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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.