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Finding the Fourth Proportional to 78,913.56, 118,386.88 and 22,753.56

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Solution

The fourth proportional to 78,913.56, 118,386.88 and 22,753.56 is: 34,135.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,913.56 : 118,386.88 = 22,753.56 : x
  2. Step 2: Convert to fraction form
    78,913.56/118,386.88 = 22,753.56/x
  3. Step 3: Cross multiply
    78,913.56x = 118,386.88 × 22,753.56
  4. Step 4: Simplify right side
    78,913.56x = 2,693,722,977.29
  5. Step 5: Solve for x
    x = 2,693,722,977.29/78,913.56
  6. Step 6: Final answer
    x = 34,135.11

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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.