Home / 72,057.80-99,443.76-40,226.96

Finding the Fourth Proportional to 72,057.80, 99,443.76 and 40,226.96

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Solution

The fourth proportional to 72,057.80, 99,443.76 and 40,226.96 is: 55,515.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,057.80 : 99,443.76 = 40,226.96 : x
  2. Step 2: Convert to fraction form
    72,057.80/99,443.76 = 40,226.96/x
  3. Step 3: Cross multiply
    72,057.80x = 99,443.76 × 40,226.96
  4. Step 4: Simplify right side
    72,057.80x = 4,000,320,155.77
  5. Step 5: Solve for x
    x = 4,000,320,155.77/72,057.80
  6. Step 6: Final answer
    x = 55,515.44

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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.