Home / 71,136.28-98,166.85-38,870.18

Finding the Fourth Proportional to 71,136.28, 98,166.85 and 38,870.18

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Solution

The fourth proportional to 71,136.28, 98,166.85 and 38,870.18 is: 53,640.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,136.28 : 98,166.85 = 38,870.18 : x
  2. Step 2: Convert to fraction form
    71,136.28/98,166.85 = 38,870.18/x
  3. Step 3: Cross multiply
    71,136.28x = 98,166.85 × 38,870.18
  4. Step 4: Simplify right side
    71,136.28x = 3,815,763,128.29
  5. Step 5: Solve for x
    x = 3,815,763,128.29/71,136.28
  6. Step 6: Final answer
    x = 53,640.19

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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.