Home / 71,701.43-98,943.91-39,869.64

Finding the Fourth Proportional to 71,701.43, 98,943.91 and 39,869.64

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Solution

The fourth proportional to 71,701.43, 98,943.91 and 39,869.64 is: 55,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,701.43 : 98,943.91 = 39,869.64 : x
  2. Step 2: Convert to fraction form
    71,701.43/98,943.91 = 39,869.64/x
  3. Step 3: Cross multiply
    71,701.43x = 98,943.91 × 39,869.64
  4. Step 4: Simplify right side
    71,701.43x = 3,944,858,343.26
  5. Step 5: Solve for x
    x = 3,944,858,343.26/71,701.43
  6. Step 6: Final answer
    x = 55,017.85

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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.