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Finding the Fourth Proportional to 78,878.97, 118,318.45 and 23,474.97

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Solution

The fourth proportional to 78,878.97, 118,318.45 and 23,474.97 is: 35,212.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,878.97 : 118,318.45 = 23,474.97 : x
  2. Step 2: Convert to fraction form
    78,878.97/118,318.45 = 23,474.97/x
  3. Step 3: Cross multiply
    78,878.97x = 118,318.45 × 23,474.97
  4. Step 4: Simplify right side
    78,878.97x = 2,777,522,064.20
  5. Step 5: Solve for x
    x = 2,777,522,064.20/78,878.97
  6. Step 6: Final answer
    x = 35,212.45

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1.5x scale

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.