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Finding the Fourth Proportional to 79,668.65, 119,576.90 and 40,253.45

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Solution

The fourth proportional to 79,668.65, 119,576.90 and 40,253.45 is: 60,417.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,668.65 : 119,576.90 = 40,253.45 : x
  2. Step 2: Convert to fraction form
    79,668.65/119,576.90 = 40,253.45/x
  3. Step 3: Cross multiply
    79,668.65x = 119,576.90 × 40,253.45
  4. Step 4: Simplify right side
    79,668.65x = 4,813,382,268.05
  5. Step 5: Solve for x
    x = 4,813,382,268.05/79,668.65
  6. Step 6: Final answer
    x = 60,417.52

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1.5x scale

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.