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Finding the Fourth Proportional to 68,368.77, 102,377.61 and 47,279.70

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Solution

The fourth proportional to 68,368.77, 102,377.61 and 47,279.70 is: 70,798.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,368.77 : 102,377.61 = 47,279.70 : x
  2. Step 2: Convert to fraction form
    68,368.77/102,377.61 = 47,279.70/x
  3. Step 3: Cross multiply
    68,368.77x = 102,377.61 × 47,279.70
  4. Step 4: Simplify right side
    68,368.77x = 4,840,382,687.52
  5. Step 5: Solve for x
    x = 4,840,382,687.52/68,368.77
  6. Step 6: Final answer
    x = 70,798.15

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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.