Home / 55,177.50-76,139.69-30,972.92

Finding the Fourth Proportional to 55,177.50, 76,139.69 and 30,972.92

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Solution

The fourth proportional to 55,177.50, 76,139.69 and 30,972.92 is: 42,739.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,177.50 : 76,139.69 = 30,972.92 : x
  2. Step 2: Convert to fraction form
    55,177.50/76,139.69 = 30,972.92/x
  3. Step 3: Cross multiply
    55,177.50x = 76,139.69 × 30,972.92
  4. Step 4: Simplify right side
    55,177.50x = 2,358,268,562.68
  5. Step 5: Solve for x
    x = 2,358,268,562.68/55,177.50
  6. Step 6: Final answer
    x = 42,739.68

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1.5x scale

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.