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Finding the Fourth Proportional to 78,885.97, 118,241.30 and 60,104.08

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Solution

The fourth proportional to 78,885.97, 118,241.30 and 60,104.08 is: 90,089.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,885.97 : 118,241.30 = 60,104.08 : x
  2. Step 2: Convert to fraction form
    78,885.97/118,241.30 = 60,104.08/x
  3. Step 3: Cross multiply
    78,885.97x = 118,241.30 × 60,104.08
  4. Step 4: Simplify right side
    78,885.97x = 7,106,784,432.72
  5. Step 5: Solve for x
    x = 7,106,784,432.72/78,885.97
  6. Step 6: Final answer
    x = 90,089.34

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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.