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Finding the Fourth Proportional to 66,486.47, 99,748.47 and 27,071.87

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Solution

The fourth proportional to 66,486.47, 99,748.47 and 27,071.87 is: 40,615.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,486.47 : 99,748.47 = 27,071.87 : x
  2. Step 2: Convert to fraction form
    66,486.47/99,748.47 = 27,071.87/x
  3. Step 3: Cross multiply
    66,486.47x = 99,748.47 × 27,071.87
  4. Step 4: Simplify right side
    66,486.47x = 2,700,377,612.54
  5. Step 5: Solve for x
    x = 2,700,377,612.54/66,486.47
  6. Step 6: Final answer
    x = 40,615.45

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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.