Home / 84,645.81-116,545.23-71,872.11

Finding the Fourth Proportional to 84,645.81, 116,545.23 and 71,872.11

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Solution

The fourth proportional to 84,645.81, 116,545.23 and 71,872.11 is: 98,957.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,645.81 : 116,545.23 = 71,872.11 : x
  2. Step 2: Convert to fraction form
    84,645.81/116,545.23 = 71,872.11/x
  3. Step 3: Cross multiply
    84,645.81x = 116,545.23 × 71,872.11
  4. Step 4: Simplify right side
    84,645.81x = 8,376,351,590.54
  5. Step 5: Solve for x
    x = 8,376,351,590.54/84,645.81
  6. Step 6: Final answer
    x = 98,957.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.