Home / 77,085.27-115,635.60-20,926.31

Finding the Fourth Proportional to 77,085.27, 115,635.60 and 20,926.31

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Solution

The fourth proportional to 77,085.27, 115,635.60 and 20,926.31 is: 31,391.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,085.27 : 115,635.60 = 20,926.31 : x
  2. Step 2: Convert to fraction form
    77,085.27/115,635.60 = 20,926.31/x
  3. Step 3: Cross multiply
    77,085.27x = 115,635.60 × 20,926.31
  4. Step 4: Simplify right side
    77,085.27x = 2,419,825,834.46
  5. Step 5: Solve for x
    x = 2,419,825,834.46/77,085.27
  6. Step 6: Final answer
    x = 31,391.55

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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.