Home / 81,098.91-121,562.25-47,834.64

Finding the Fourth Proportional to 81,098.91, 121,562.25 and 47,834.64

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Solution

The fourth proportional to 81,098.91, 121,562.25 and 47,834.64 is: 71,701.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,098.91 : 121,562.25 = 47,834.64 : x
  2. Step 2: Convert to fraction form
    81,098.91/121,562.25 = 47,834.64/x
  3. Step 3: Cross multiply
    81,098.91x = 121,562.25 × 47,834.64
  4. Step 4: Simplify right side
    81,098.91x = 5,814,886,466.34
  5. Step 5: Solve for x
    x = 5,814,886,466.34/81,098.91
  6. Step 6: Final answer
    x = 71,701.17

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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.