Home / 77,139.38-115,755.05-34,441.49

Finding the Fourth Proportional to 77,139.38, 115,755.05 and 34,441.49

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Solution

The fourth proportional to 77,139.38, 115,755.05 and 34,441.49 is: 51,682.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,139.38 : 115,755.05 = 34,441.49 : x
  2. Step 2: Convert to fraction form
    77,139.38/115,755.05 = 34,441.49/x
  3. Step 3: Cross multiply
    77,139.38x = 115,755.05 × 34,441.49
  4. Step 4: Simplify right side
    77,139.38x = 3,986,776,397.02
  5. Step 5: Solve for x
    x = 3,986,776,397.02/77,139.38
  6. Step 6: Final answer
    x = 51,682.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.