Home / 78,827.20-108,781.92-43,017.96

Finding the Fourth Proportional to 78,827.20, 108,781.92 and 43,017.96

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Solution

The fourth proportional to 78,827.20, 108,781.92 and 43,017.96 is: 59,364.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,827.20 : 108,781.92 = 43,017.96 : x
  2. Step 2: Convert to fraction form
    78,827.20/108,781.92 = 43,017.96/x
  3. Step 3: Cross multiply
    78,827.20x = 108,781.92 × 43,017.96
  4. Step 4: Simplify right side
    78,827.20x = 4,679,576,283.28
  5. Step 5: Solve for x
    x = 4,679,576,283.28/78,827.20
  6. Step 6: Final answer
    x = 59,364.99

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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.