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Finding the Fourth Proportional to 47,279.90, 65,279.22 and 29,382.95

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Solution

The fourth proportional to 47,279.90, 65,279.22 and 29,382.95 is: 40,568.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,279.90 : 65,279.22 = 29,382.95 : x
  2. Step 2: Convert to fraction form
    47,279.90/65,279.22 = 29,382.95/x
  3. Step 3: Cross multiply
    47,279.90x = 65,279.22 × 29,382.95
  4. Step 4: Simplify right side
    47,279.90x = 1,918,096,110.31
  5. Step 5: Solve for x
    x = 1,918,096,110.31/47,279.90
  6. Step 6: Final answer
    x = 40,568.95

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1.5x scale

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.