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Finding the Fourth Proportional to 79,270.65, 109,394.42 and 45,283.66

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Solution

The fourth proportional to 79,270.65, 109,394.42 and 45,283.66 is: 62,491.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,270.65 : 109,394.42 = 45,283.66 : x
  2. Step 2: Convert to fraction form
    79,270.65/109,394.42 = 45,283.66/x
  3. Step 3: Cross multiply
    79,270.65x = 109,394.42 × 45,283.66
  4. Step 4: Simplify right side
    79,270.65x = 4,953,779,221.27
  5. Step 5: Solve for x
    x = 4,953,779,221.27/79,270.65
  6. Step 6: Final answer
    x = 62,491.97

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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.