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Finding the Fourth Proportional to 77,251.10, 115,963.05 and 72,175.10

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Solution

The fourth proportional to 77,251.10, 115,963.05 and 72,175.10 is: 108,343.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,251.10 : 115,963.05 = 72,175.10 : x
  2. Step 2: Convert to fraction form
    77,251.10/115,963.05 = 72,175.10/x
  3. Step 3: Cross multiply
    77,251.10x = 115,963.05 × 72,175.10
  4. Step 4: Simplify right side
    77,251.10x = 8,369,644,730.06
  5. Step 5: Solve for x
    x = 8,369,644,730.06/77,251.10
  6. Step 6: Final answer
    x = 108,343.37

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1.5x scale

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.