Home / 55,965.12-77,233.20-30,472.80

Finding the Fourth Proportional to 55,965.12, 77,233.20 and 30,472.80

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Solution

The fourth proportional to 55,965.12, 77,233.20 and 30,472.80 is: 42,053.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,965.12 : 77,233.20 = 30,472.80 : x
  2. Step 2: Convert to fraction form
    55,965.12/77,233.20 = 30,472.80/x
  3. Step 3: Cross multiply
    55,965.12x = 77,233.20 × 30,472.80
  4. Step 4: Simplify right side
    55,965.12x = 2,353,511,856.96
  5. Step 5: Solve for x
    x = 2,353,511,856.96/55,965.12
  6. Step 6: Final answer
    x = 42,053.19

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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.