Home / 55,177.06-76,139.07-30,972.48

Finding the Fourth Proportional to 55,177.06, 76,139.07 and 30,972.48

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Solution

The fourth proportional to 55,177.06, 76,139.07 and 30,972.48 is: 42,739.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,177.06 : 76,139.07 = 30,972.48 : x
  2. Step 2: Convert to fraction form
    55,177.06/76,139.07 = 30,972.48/x
  3. Step 3: Cross multiply
    55,177.06x = 76,139.07 × 30,972.48
  4. Step 4: Simplify right side
    55,177.06x = 2,358,215,537.27
  5. Step 5: Solve for x
    x = 2,358,215,537.27/55,177.06
  6. Step 6: Final answer
    x = 42,739.06

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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.