Home / 88,078.11-132,116.70-21,518.61

Finding the Fourth Proportional to 88,078.11, 132,116.70 and 21,518.61

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Solution

The fourth proportional to 88,078.11, 132,116.70 and 21,518.61 is: 32,277.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,078.11 : 132,116.70 = 21,518.61 : x
  2. Step 2: Convert to fraction form
    88,078.11/132,116.70 = 21,518.61/x
  3. Step 3: Cross multiply
    88,078.11x = 132,116.70 × 21,518.61
  4. Step 4: Simplify right side
    88,078.11x = 2,842,967,741.79
  5. Step 5: Solve for x
    x = 2,842,967,741.79/88,078.11
  6. Step 6: Final answer
    x = 32,277.80

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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.