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Finding the Fourth Proportional to 40,272.50, 60,417.40 and 15,648.50

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Solution

The fourth proportional to 40,272.50, 60,417.40 and 15,648.50 is: 23,476.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,272.50 : 60,417.40 = 15,648.50 : x
  2. Step 2: Convert to fraction form
    40,272.50/60,417.40 = 15,648.50/x
  3. Step 3: Cross multiply
    40,272.50x = 60,417.40 × 15,648.50
  4. Step 4: Simplify right side
    40,272.50x = 945,441,683.90
  5. Step 5: Solve for x
    x = 945,441,683.90/40,272.50
  6. Step 6: Final answer
    x = 23,476.11

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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.