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Finding the Fourth Proportional to 40,751.78, 61,127.90 and 18,549.63

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Solution

The fourth proportional to 40,751.78, 61,127.90 and 18,549.63 is: 27,824.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,751.78 : 61,127.90 = 18,549.63 : x
  2. Step 2: Convert to fraction form
    40,751.78/61,127.90 = 18,549.63/x
  3. Step 3: Cross multiply
    40,751.78x = 61,127.90 × 18,549.63
  4. Step 4: Simplify right side
    40,751.78x = 1,133,900,154.67
  5. Step 5: Solve for x
    x = 1,133,900,154.67/40,751.78
  6. Step 6: Final answer
    x = 27,824.55

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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.