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Finding the Fourth Proportional to 84,103.91, 126,155.87 and 39,735.13

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Solution

The fourth proportional to 84,103.91, 126,155.87 and 39,735.13 is: 59,602.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,103.91 : 126,155.87 = 39,735.13 : x
  2. Step 2: Convert to fraction form
    84,103.91/126,155.87 = 39,735.13/x
  3. Step 3: Cross multiply
    84,103.91x = 126,155.87 × 39,735.13
  4. Step 4: Simplify right side
    84,103.91x = 5,012,819,065.26
  5. Step 5: Solve for x
    x = 5,012,819,065.26/84,103.91
  6. Step 6: Final answer
    x = 59,602.69

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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.