Home / 80,732.14-121,114.42-28,127.50

Finding the Fourth Proportional to 80,732.14, 121,114.42 and 28,127.50

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Solution

The fourth proportional to 80,732.14, 121,114.42 and 28,127.50 is: 42,196.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,732.14 : 121,114.42 = 28,127.50 : x
  2. Step 2: Convert to fraction form
    80,732.14/121,114.42 = 28,127.50/x
  3. Step 3: Cross multiply
    80,732.14x = 121,114.42 × 28,127.50
  4. Step 4: Simplify right side
    80,732.14x = 3,406,645,848.55
  5. Step 5: Solve for x
    x = 3,406,645,848.55/80,732.14
  6. Step 6: Final answer
    x = 42,196.90

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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.