Home / 84,129.24-126,176.04-31,542.60

Finding the Fourth Proportional to 84,129.24, 126,176.04 and 31,542.60

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Solution

The fourth proportional to 84,129.24, 126,176.04 and 31,542.60 is: 47,307.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,129.24 : 126,176.04 = 31,542.60 : x
  2. Step 2: Convert to fraction form
    84,129.24/126,176.04 = 31,542.60/x
  3. Step 3: Cross multiply
    84,129.24x = 126,176.04 × 31,542.60
  4. Step 4: Simplify right side
    84,129.24x = 3,979,920,359.30
  5. Step 5: Solve for x
    x = 3,979,920,359.30/84,129.24
  6. Step 6: Final answer
    x = 47,307.22

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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.