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Finding the Fourth Proportional to 79,656.42, 109,912.99 and 45,658.65

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Solution

The fourth proportional to 79,656.42, 109,912.99 and 45,658.65 is: 63,001.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,656.42 : 109,912.99 = 45,658.65 : x
  2. Step 2: Convert to fraction form
    79,656.42/109,912.99 = 45,658.65/x
  3. Step 3: Cross multiply
    79,656.42x = 109,912.99 × 45,658.65
  4. Step 4: Simplify right side
    79,656.42x = 5,018,478,385.76
  5. Step 5: Solve for x
    x = 5,018,478,385.76/79,656.42
  6. Step 6: Final answer
    x = 63,001.56

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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.