Home / 71,116.38-98,140.55-39,285.14

Finding the Fourth Proportional to 71,116.38, 98,140.55 and 39,285.14

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Solution

The fourth proportional to 71,116.38, 98,140.55 and 39,285.14 is: 54,213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,116.38 : 98,140.55 = 39,285.14 : x
  2. Step 2: Convert to fraction form
    71,116.38/98,140.55 = 39,285.14/x
  3. Step 3: Cross multiply
    71,116.38x = 98,140.55 × 39,285.14
  4. Step 4: Simplify right side
    71,116.38x = 3,855,464,559.30
  5. Step 5: Solve for x
    x = 3,855,464,559.30/71,116.38
  6. Step 6: Final answer
    x = 54,213.45

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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.