Home / 72,166,855.68-99,493,920.12-57,331,403.16

Finding the Fourth Proportional to 72,166,855.68, 99,493,920.12 and 57,331,403.16

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Solution

The fourth proportional to 72,166,855.68, 99,493,920.12 and 57,331,403.16 is: 79,040,800.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,166,855.68 : 99,493,920.12 = 57,331,403.16 : x
  2. Step 2: Convert to fraction form
    72,166,855.68/99,493,920.12 = 57,331,403.16/x
  3. Step 3: Cross multiply
    72,166,855.68x = 99,493,920.12 × 57,331,403.16
  4. Step 4: Simplify right side
    72,166,855.68x = 5,704,126,046,368,555
  5. Step 5: Solve for x
    x = 5,704,126,046,368,555/72,166,855.68
  6. Step 6: Final answer
    x = 79,040,800.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.