Home / 77,081.11-115,608.01-20,925.58

Finding the Fourth Proportional to 77,081.11, 115,608.01 and 20,925.58

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Solution

The fourth proportional to 77,081.11, 115,608.01 and 20,925.58 is: 31,384.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,081.11 : 115,608.01 = 20,925.58 : x
  2. Step 2: Convert to fraction form
    77,081.11/115,608.01 = 20,925.58/x
  3. Step 3: Cross multiply
    77,081.11x = 115,608.01 × 20,925.58
  4. Step 4: Simplify right side
    77,081.11x = 2,419,164,661.90
  5. Step 5: Solve for x
    x = 2,419,164,661.90/77,081.11
  6. Step 6: Final answer
    x = 31,384.66

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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.