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Finding the Fourth Proportional to 71,359.32, 98,382.50 and 61,394.80

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Solution

The fourth proportional to 71,359.32, 98,382.50 and 61,394.80 is: 84,644.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,359.32 : 98,382.50 = 61,394.80 : x
  2. Step 2: Convert to fraction form
    71,359.32/98,382.50 = 61,394.80/x
  3. Step 3: Cross multiply
    71,359.32x = 98,382.50 × 61,394.80
  4. Step 4: Simplify right side
    71,359.32x = 6,040,173,419.09
  5. Step 5: Solve for x
    x = 6,040,173,419.09/71,359.32
  6. Step 6: Final answer
    x = 84,644.49

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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.