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Finding the Fourth Proportional to 79,890.02, 110,251.80 and 45,909.51

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Solution

The fourth proportional to 79,890.02, 110,251.80 and 45,909.51 is: 63,357.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,890.02 : 110,251.80 = 45,909.51 : x
  2. Step 2: Convert to fraction form
    79,890.02/110,251.80 = 45,909.51/x
  3. Step 3: Cross multiply
    79,890.02x = 110,251.80 × 45,909.51
  4. Step 4: Simplify right side
    79,890.02x = 5,061,606,114.62
  5. Step 5: Solve for x
    x = 5,061,606,114.62/79,890.02
  6. Step 6: Final answer
    x = 63,357.18

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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.