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Finding the Fourth Proportional to 88,698.10, 133,047.15 and 72,951.70

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Solution

The fourth proportional to 88,698.10, 133,047.15 and 72,951.70 is: 109,427.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,698.10 : 133,047.15 = 72,951.70 : x
  2. Step 2: Convert to fraction form
    88,698.10/133,047.15 = 72,951.70/x
  3. Step 3: Cross multiply
    88,698.10x = 133,047.15 × 72,951.70
  4. Step 4: Simplify right side
    88,698.10x = 9,706,015,772.66
  5. Step 5: Solve for x
    x = 9,706,015,772.66/88,698.10
  6. Step 6: Final answer
    x = 109,427.55

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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.