Home / 81,808.67-122,732.75-28,492.85

Finding the Fourth Proportional to 81,808.67, 122,732.75 and 28,492.85

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Solution

The fourth proportional to 81,808.67, 122,732.75 and 28,492.85 is: 42,746.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,808.67 : 122,732.75 = 28,492.85 : x
  2. Step 2: Convert to fraction form
    81,808.67/122,732.75 = 28,492.85/x
  3. Step 3: Cross multiply
    81,808.67x = 122,732.75 × 28,492.85
  4. Step 4: Simplify right side
    81,808.67x = 3,497,005,079.71
  5. Step 5: Solve for x
    x = 3,497,005,079.71/81,808.67
  6. Step 6: Final answer
    x = 42,746.15

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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.