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Finding the Fourth Proportional to 101,375.76, 139,886.32 and 56,047.62

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Solution

The fourth proportional to 101,375.76, 139,886.32 and 56,047.62 is: 77,338.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,375.76 : 139,886.32 = 56,047.62 : x
  2. Step 2: Convert to fraction form
    101,375.76/139,886.32 = 56,047.62/x
  3. Step 3: Cross multiply
    101,375.76x = 139,886.32 × 56,047.62
  4. Step 4: Simplify right side
    101,375.76x = 7,840,295,306.56
  5. Step 5: Solve for x
    x = 7,840,295,306.56/101,375.76
  6. Step 6: Final answer
    x = 77,338.95

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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.