Home / 71,516.16-98,692.38-39,685.05

Finding the Fourth Proportional to 71,516.16, 98,692.38 and 39,685.05

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Solution

The fourth proportional to 71,516.16, 98,692.38 and 39,685.05 is: 54,765.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,516.16 : 98,692.38 = 39,685.05 : x
  2. Step 2: Convert to fraction form
    71,516.16/98,692.38 = 39,685.05/x
  3. Step 3: Cross multiply
    71,516.16x = 98,692.38 × 39,685.05
  4. Step 4: Simplify right side
    71,516.16x = 3,916,612,034.92
  5. Step 5: Solve for x
    x = 3,916,612,034.92/71,516.16
  6. Step 6: Final answer
    x = 54,765.41

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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.