Home / 71,118.12-98,142.42-39,286.35

Finding the Fourth Proportional to 71,118.12, 98,142.42 and 39,286.35

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Solution

The fourth proportional to 71,118.12, 98,142.42 and 39,286.35 is: 54,214.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,118.12 : 98,142.42 = 39,286.35 : x
  2. Step 2: Convert to fraction form
    71,118.12/98,142.42 = 39,286.35/x
  3. Step 3: Cross multiply
    71,118.12x = 98,142.42 × 39,286.35
  4. Step 4: Simplify right side
    71,118.12x = 3,855,657,461.97
  5. Step 5: Solve for x
    x = 3,855,657,461.97/71,118.12
  6. Step 6: Final answer
    x = 54,214.84

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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.