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Finding the Fourth Proportional to 80,710.83, 121,025.90 and 30,092.72

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Solution

The fourth proportional to 80,710.83, 121,025.90 and 30,092.72 is: 45,124.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,710.83 : 121,025.90 = 30,092.72 : x
  2. Step 2: Convert to fraction form
    80,710.83/121,025.90 = 30,092.72/x
  3. Step 3: Cross multiply
    80,710.83x = 121,025.90 × 30,092.72
  4. Step 4: Simplify right side
    80,710.83x = 3,641,997,822.28
  5. Step 5: Solve for x
    x = 3,641,997,822.28/80,710.83
  6. Step 6: Final answer
    x = 45,124.03

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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.