Home / 72,568,568.64-108,859,123.20-20,046,221.76

Finding the Fourth Proportional to 72,568,568.64, 108,859,123.20 and 20,046,221.76

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Solution

The fourth proportional to 72,568,568.64, 108,859,123.20 and 20,046,221.76 is: 30,071,064.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,568,568.64 : 108,859,123.20 = 20,046,221.76 : x
  2. Step 2: Convert to fraction form
    72,568,568.64/108,859,123.20 = 20,046,221.76/x
  3. Step 3: Cross multiply
    72,568,568.64x = 108,859,123.20 × 20,046,221.76
  4. Step 4: Simplify right side
    72,568,568.64x = 2,182,214,124,266,361
  5. Step 5: Solve for x
    x = 2,182,214,124,266,361/72,568,568.64
  6. Step 6: Final answer
    x = 30,071,064.72

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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.