Home / 84,239.52-126,337.68-39,854.40

Finding the Fourth Proportional to 84,239.52, 126,337.68 and 39,854.40

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Solution

The fourth proportional to 84,239.52, 126,337.68 and 39,854.40 is: 59,771.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,239.52 : 126,337.68 = 39,854.40 : x
  2. Step 2: Convert to fraction form
    84,239.52/126,337.68 = 39,854.40/x
  3. Step 3: Cross multiply
    84,239.52x = 126,337.68 × 39,854.40
  4. Step 4: Simplify right side
    84,239.52x = 5,035,112,433.79
  5. Step 5: Solve for x
    x = 5,035,112,433.79/84,239.52
  6. Step 6: Final answer
    x = 59,771.38

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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.