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Finding the Fourth Proportional to 88,957.28, 133,588.60 and 78,984.56

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Solution

The fourth proportional to 88,957.28, 133,588.60 and 78,984.56 is: 118,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,957.28 : 133,588.60 = 78,984.56 : x
  2. Step 2: Convert to fraction form
    88,957.28/133,588.60 = 78,984.56/x
  3. Step 3: Cross multiply
    88,957.28x = 133,588.60 × 78,984.56
  4. Step 4: Simplify right side
    88,957.28x = 10,551,436,792.02
  5. Step 5: Solve for x
    x = 10,551,436,792.02/88,957.28
  6. Step 6: Final answer
    x = 118,612.40

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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.