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Finding the Fourth Proportional to 80,950.73, 121,425.28 and 45,411.98

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Solution

The fourth proportional to 80,950.73, 121,425.28 and 45,411.98 is: 68,117.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,950.73 : 121,425.28 = 45,411.98 : x
  2. Step 2: Convert to fraction form
    80,950.73/121,425.28 = 45,411.98/x
  3. Step 3: Cross multiply
    80,950.73x = 121,425.28 × 45,411.98
  4. Step 4: Simplify right side
    80,950.73x = 5,514,161,666.20
  5. Step 5: Solve for x
    x = 5,514,161,666.20/80,950.73
  6. Step 6: Final answer
    x = 68,117.51

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1.5x scale

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.