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Finding the Fourth Proportional to 40,096.70, 60,128.49 and 15,132.50

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Solution

The fourth proportional to 40,096.70, 60,128.49 and 15,132.50 is: 22,692.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,096.70 : 60,128.49 = 15,132.50 : x
  2. Step 2: Convert to fraction form
    40,096.70/60,128.49 = 15,132.50/x
  3. Step 3: Cross multiply
    40,096.70x = 60,128.49 × 15,132.50
  4. Step 4: Simplify right side
    40,096.70x = 909,894,374.93
  5. Step 5: Solve for x
    x = 909,894,374.93/40,096.70
  6. Step 6: Final answer
    x = 22,692.50

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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.