Home / 84,405.57-126,545.31-51,117.54

Finding the Fourth Proportional to 84,405.57, 126,545.31 and 51,117.54

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Solution

The fourth proportional to 84,405.57, 126,545.31 and 51,117.54 is: 76,638.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,405.57 : 126,545.31 = 51,117.54 : x
  2. Step 2: Convert to fraction form
    84,405.57/126,545.31 = 51,117.54/x
  3. Step 3: Cross multiply
    84,405.57x = 126,545.31 × 51,117.54
  4. Step 4: Simplify right side
    84,405.57x = 6,468,684,945.74
  5. Step 5: Solve for x
    x = 6,468,684,945.74/84,405.57
  6. Step 6: Final answer
    x = 76,638.13

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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.