Home / 72,542,099.80-108,671,432.10-43,702,568.20

Finding the Fourth Proportional to 72,542,099.80, 108,671,432.10 and 43,702,568.20

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Solution

The fourth proportional to 72,542,099.80, 108,671,432.10 and 43,702,568.20 is: 65,468,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,542,099.80 : 108,671,432.10 = 43,702,568.20 : x
  2. Step 2: Convert to fraction form
    72,542,099.80/108,671,432.10 = 43,702,568.20/x
  3. Step 3: Cross multiply
    72,542,099.80x = 108,671,432.10 × 43,702,568.20
  4. Step 4: Simplify right side
    72,542,099.80x = 4,749,220,672,741,919
  5. Step 5: Solve for x
    x = 4,749,220,672,741,919/72,542,099.80
  6. Step 6: Final answer
    x = 65,468,475.35

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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.