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Finding the Fourth Proportional to 78,969.75, 118,475.15 and 23,565.75

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Solution

The fourth proportional to 78,969.75, 118,475.15 and 23,565.75 is: 35,354.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,969.75 : 118,475.15 = 23,565.75 : x
  2. Step 2: Convert to fraction form
    78,969.75/118,475.15 = 23,565.75/x
  3. Step 3: Cross multiply
    78,969.75x = 118,475.15 × 23,565.75
  4. Step 4: Simplify right side
    78,969.75x = 2,791,955,648.28
  5. Step 5: Solve for x
    x = 2,791,955,648.28/78,969.75
  6. Step 6: Final answer
    x = 35,354.75

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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.