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Finding the Fourth Proportional to 40,440.78, 60,686.28 and 15,482.88

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Solution

The fourth proportional to 40,440.78, 60,686.28 and 15,482.88 is: 23,233.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,440.78 : 60,686.28 = 15,482.88 : x
  2. Step 2: Convert to fraction form
    40,440.78/60,686.28 = 15,482.88/x
  3. Step 3: Cross multiply
    40,440.78x = 60,686.28 × 15,482.88
  4. Step 4: Simplify right side
    40,440.78x = 939,598,390.89
  5. Step 5: Solve for x
    x = 939,598,390.89/40,440.78
  6. Step 6: Final answer
    x = 23,233.93

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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.