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Finding the Fourth Proportional to 77,043.92, 115,565.88 and 20,884.04

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Solution

The fourth proportional to 77,043.92, 115,565.88 and 20,884.04 is: 31,326.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,043.92 : 115,565.88 = 20,884.04 : x
  2. Step 2: Convert to fraction form
    77,043.92/115,565.88 = 20,884.04/x
  3. Step 3: Cross multiply
    77,043.92x = 115,565.88 × 20,884.04
  4. Step 4: Simplify right side
    77,043.92x = 2,413,482,460.56
  5. Step 5: Solve for x
    x = 2,413,482,460.56/77,043.92
  6. Step 6: Final answer
    x = 31,326.06

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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.