Home / 80,818.68-111,491.18-62,790.31

Finding the Fourth Proportional to 80,818.68, 111,491.18 and 62,790.31

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Solution

The fourth proportional to 80,818.68, 111,491.18 and 62,790.31 is: 86,620.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,818.68 : 111,491.18 = 62,790.31 : x
  2. Step 2: Convert to fraction form
    80,818.68/111,491.18 = 62,790.31/x
  3. Step 3: Cross multiply
    80,818.68x = 111,491.18 × 62,790.31
  4. Step 4: Simplify right side
    80,818.68x = 7,000,565,541.40
  5. Step 5: Solve for x
    x = 7,000,565,541.40/80,818.68
  6. Step 6: Final answer
    x = 86,620.64

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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.