Home / 84,149.10-126,186.72-31,521.66

Finding the Fourth Proportional to 84,149.10, 126,186.72 and 31,521.66

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Solution

The fourth proportional to 84,149.10, 126,186.72 and 31,521.66 is: 47,268.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,149.10 : 126,186.72 = 31,521.66 : x
  2. Step 2: Convert to fraction form
    84,149.10/126,186.72 = 31,521.66/x
  3. Step 3: Cross multiply
    84,149.10x = 126,186.72 × 31,521.66
  4. Step 4: Simplify right side
    84,149.10x = 3,977,614,884.36
  5. Step 5: Solve for x
    x = 3,977,614,884.36/84,149.10
  6. Step 6: Final answer
    x = 47,268.66

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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.