Home / 78,923.55-108,917.13-43,116.90

Finding the Fourth Proportional to 78,923.55, 108,917.13 and 43,116.90

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Solution

The fourth proportional to 78,923.55, 108,917.13 and 43,116.90 is: 59,502.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,923.55 : 108,917.13 = 43,116.90 : x
  2. Step 2: Convert to fraction form
    78,923.55/108,917.13 = 43,116.90/x
  3. Step 3: Cross multiply
    78,923.55x = 108,917.13 × 43,116.90
  4. Step 4: Simplify right side
    78,923.55x = 4,696,169,002.50
  5. Step 5: Solve for x
    x = 4,696,169,002.50/78,923.55
  6. Step 6: Final answer
    x = 59,502.76

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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.