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Finding the Fourth Proportional to 88,071.12, 132,121.35 and 28,890.90

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Solution

The fourth proportional to 88,071.12, 132,121.35 and 28,890.90 is: 43,341.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,071.12 : 132,121.35 = 28,890.90 : x
  2. Step 2: Convert to fraction form
    88,071.12/132,121.35 = 28,890.90/x
  3. Step 3: Cross multiply
    88,071.12x = 132,121.35 × 28,890.90
  4. Step 4: Simplify right side
    88,071.12x = 3,817,104,710.72
  5. Step 5: Solve for x
    x = 3,817,104,710.72/88,071.12
  6. Step 6: Final answer
    x = 43,341.16

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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.