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Finding the Fourth Proportional to 67,488.64, 101,269.52 and 28,072.96

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Solution

The fourth proportional to 67,488.64, 101,269.52 and 28,072.96 is: 42,124.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,488.64 : 101,269.52 = 28,072.96 : x
  2. Step 2: Convert to fraction form
    67,488.64/101,269.52 = 28,072.96/x
  3. Step 3: Cross multiply
    67,488.64x = 101,269.52 × 28,072.96
  4. Step 4: Simplify right side
    67,488.64x = 2,842,935,184.18
  5. Step 5: Solve for x
    x = 2,842,935,184.18/67,488.64
  6. Step 6: Final answer
    x = 42,124.65

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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.