Home / 85,487.15-117,988.35-49,679.12

Finding the Fourth Proportional to 85,487.15, 117,988.35 and 49,679.12

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Solution

The fourth proportional to 85,487.15, 117,988.35 and 49,679.12 is: 68,566.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,487.15 : 117,988.35 = 49,679.12 : x
  2. Step 2: Convert to fraction form
    85,487.15/117,988.35 = 49,679.12/x
  3. Step 3: Cross multiply
    85,487.15x = 117,988.35 × 49,679.12
  4. Step 4: Simplify right side
    85,487.15x = 5,861,557,398.25
  5. Step 5: Solve for x
    x = 5,861,557,398.25/85,487.15
  6. Step 6: Final answer
    x = 68,566.53

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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.