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Finding the Fourth Proportional to 79,488.75, 119,077.29 and 46,138.89

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Solution

The fourth proportional to 79,488.75, 119,077.29 and 46,138.89 is: 69,117.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,488.75 : 119,077.29 = 46,138.89 : x
  2. Step 2: Convert to fraction form
    79,488.75/119,077.29 = 46,138.89/x
  3. Step 3: Cross multiply
    79,488.75x = 119,077.29 × 46,138.89
  4. Step 4: Simplify right side
    79,488.75x = 5,494,093,984.81
  5. Step 5: Solve for x
    x = 5,494,093,984.81/79,488.75
  6. Step 6: Final answer
    x = 69,117.88

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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.