Home / 81,237.65-112,142.03-49,417.61

Finding the Fourth Proportional to 81,237.65, 112,142.03 and 49,417.61

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Solution

The fourth proportional to 81,237.65, 112,142.03 and 49,417.61 is: 68,217.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,237.65 : 112,142.03 = 49,417.61 : x
  2. Step 2: Convert to fraction form
    81,237.65/112,142.03 = 49,417.61/x
  3. Step 3: Cross multiply
    81,237.65x = 112,142.03 × 49,417.61
  4. Step 4: Simplify right side
    81,237.65x = 5,541,790,295.35
  5. Step 5: Solve for x
    x = 5,541,790,295.35/81,237.65
  6. Step 6: Final answer
    x = 68,217.02

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1.5x scale

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.