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Finding the Fourth Proportional to 80,872.34, 111,602.70 and 45,063.86

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Solution

The fourth proportional to 80,872.34, 111,602.70 and 45,063.86 is: 62,187.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,872.34 : 111,602.70 = 45,063.86 : x
  2. Step 2: Convert to fraction form
    80,872.34/111,602.70 = 45,063.86/x
  3. Step 3: Cross multiply
    80,872.34x = 111,602.70 × 45,063.86
  4. Step 4: Simplify right side
    80,872.34x = 5,029,248,448.42
  5. Step 5: Solve for x
    x = 5,029,248,448.42/80,872.34
  6. Step 6: Final answer
    x = 62,187.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.