Home / 80,678,779.20-121,002,422.40-26,826,091.20

Finding the Fourth Proportional to 80,678,779.20, 121,002,422.40 and 26,826,091.20

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Solution

The fourth proportional to 80,678,779.20, 121,002,422.40 and 26,826,091.20 is: 40,233,901.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,678,779.20 : 121,002,422.40 = 26,826,091.20 : x
  2. Step 2: Convert to fraction form
    80,678,779.20/121,002,422.40 = 26,826,091.20/x
  3. Step 3: Cross multiply
    80,678,779.20x = 121,002,422.40 × 26,826,091.20
  4. Step 4: Simplify right side
    80,678,779.20x = 3,246,022,018,723,323
  5. Step 5: Solve for x
    x = 3,246,022,018,723,323/80,678,779.20
  6. Step 6: Final answer
    x = 40,233,901.04

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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.