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Finding the Fourth Proportional to 109,704.71, 151,395.48 and 61,965.15

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Solution

The fourth proportional to 109,704.71, 151,395.48 and 61,965.15 is: 85,513.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,704.71 : 151,395.48 = 61,965.15 : x
  2. Step 2: Convert to fraction form
    109,704.71/151,395.48 = 61,965.15/x
  3. Step 3: Cross multiply
    109,704.71x = 151,395.48 × 61,965.15
  4. Step 4: Simplify right side
    109,704.71x = 9,381,243,627.52
  5. Step 5: Solve for x
    x = 9,381,243,627.52/109,704.71
  6. Step 6: Final answer
    x = 85,513.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.