Home / 72,179,856.90-108,276,147.70-20,364,913.44

Finding the Fourth Proportional to 72,179,856.90, 108,276,147.70 and 20,364,913.44

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Solution

The fourth proportional to 72,179,856.90, 108,276,147.70 and 20,364,913.44 is: 30,549,165.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,179,856.90 : 108,276,147.70 = 20,364,913.44 : x
  2. Step 2: Convert to fraction form
    72,179,856.90/108,276,147.70 = 20,364,913.44/x
  3. Step 3: Cross multiply
    72,179,856.90x = 108,276,147.70 × 20,364,913.44
  4. Step 4: Simplify right side
    72,179,856.90x = 2,205,034,375,527,155.25
  5. Step 5: Solve for x
    x = 2,205,034,375,527,155.25/72,179,856.90
  6. Step 6: Final answer
    x = 30,549,165.24

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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.