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Finding the Fourth Proportional to 71,406.69, 98,534.34 and 39,574.95

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Solution

The fourth proportional to 71,406.69, 98,534.34 and 39,574.95 is: 54,609.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,406.69 : 98,534.34 = 39,574.95 : x
  2. Step 2: Convert to fraction form
    71,406.69/98,534.34 = 39,574.95/x
  3. Step 3: Cross multiply
    71,406.69x = 98,534.34 × 39,574.95
  4. Step 4: Simplify right side
    71,406.69x = 3,899,491,578.78
  5. Step 5: Solve for x
    x = 3,899,491,578.78/71,406.69
  6. Step 6: Final answer
    x = 54,609.61

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1.5x scale

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.