Home / 84,135.65-126,166.46-31,508.19

Finding the Fourth Proportional to 84,135.65, 126,166.46 and 31,508.19

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Solution

The fourth proportional to 84,135.65, 126,166.46 and 31,508.19 is: 47,248.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,135.65 : 126,166.46 = 31,508.19 : x
  2. Step 2: Convert to fraction form
    84,135.65/126,166.46 = 31,508.19/x
  3. Step 3: Cross multiply
    84,135.65x = 126,166.46 × 31,508.19
  4. Step 4: Simplify right side
    84,135.65x = 3,975,276,635.77
  5. Step 5: Solve for x
    x = 3,975,276,635.77/84,135.65
  6. Step 6: Final answer
    x = 47,248.42

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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.