Home / 71,701.34-98,943.78-39,869.55

Finding the Fourth Proportional to 71,701.34, 98,943.78 and 39,869.55

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Solution

The fourth proportional to 71,701.34, 98,943.78 and 39,869.55 is: 55,017.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,701.34 : 98,943.78 = 39,869.55 : x
  2. Step 2: Convert to fraction form
    71,701.34/98,943.78 = 39,869.55/x
  3. Step 3: Cross multiply
    71,701.34x = 98,943.78 × 39,869.55
  4. Step 4: Simplify right side
    71,701.34x = 3,944,843,909.14
  5. Step 5: Solve for x
    x = 3,944,843,909.14/71,701.34
  6. Step 6: Final answer
    x = 55,017.72

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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.