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Finding the Fourth Proportional to 86,886.96, 119,905.56 and 49,169.04

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Solution

The fourth proportional to 86,886.96, 119,905.56 and 49,169.04 is: 67,854.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,886.96 : 119,905.56 = 49,169.04 : x
  2. Step 2: Convert to fraction form
    86,886.96/119,905.56 = 49,169.04/x
  3. Step 3: Cross multiply
    86,886.96x = 119,905.56 × 49,169.04
  4. Step 4: Simplify right side
    86,886.96x = 5,895,641,275.86
  5. Step 5: Solve for x
    x = 5,895,641,275.86/86,886.96
  6. Step 6: Final answer
    x = 67,854.16

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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.