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Finding the Fourth Proportional to 79,795.84, 119,728.92 and 42,346.80

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Solution

The fourth proportional to 79,795.84, 119,728.92 and 42,346.80 is: 63,538.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,795.84 : 119,728.92 = 42,346.80 : x
  2. Step 2: Convert to fraction form
    79,795.84/119,728.92 = 42,346.80/x
  3. Step 3: Cross multiply
    79,795.84x = 119,728.92 × 42,346.80
  4. Step 4: Simplify right side
    79,795.84x = 5,070,136,629.46
  5. Step 5: Solve for x
    x = 5,070,136,629.46/79,795.84
  6. Step 6: Final answer
    x = 63,538.86

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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.