Home / 55,138.28-76,051.86-38,147.72

Finding the Fourth Proportional to 55,138.28, 76,051.86 and 38,147.72

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Solution

The fourth proportional to 55,138.28, 76,051.86 and 38,147.72 is: 52,616.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,138.28 : 76,051.86 = 38,147.72 : x
  2. Step 2: Convert to fraction form
    55,138.28/76,051.86 = 38,147.72/x
  3. Step 3: Cross multiply
    55,138.28x = 76,051.86 × 38,147.72
  4. Step 4: Simplify right side
    55,138.28x = 2,901,205,060.76
  5. Step 5: Solve for x
    x = 2,901,205,060.76/55,138.28
  6. Step 6: Final answer
    x = 52,616.89

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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.