Home / 85,209.12-117,651.18-55,012.08

Finding the Fourth Proportional to 85,209.12, 117,651.18 and 55,012.08

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Solution

The fourth proportional to 85,209.12, 117,651.18 and 55,012.08 is: 75,957.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,209.12 : 117,651.18 = 55,012.08 : x
  2. Step 2: Convert to fraction form
    85,209.12/117,651.18 = 55,012.08/x
  3. Step 3: Cross multiply
    85,209.12x = 117,651.18 × 55,012.08
  4. Step 4: Simplify right side
    85,209.12x = 6,472,236,126.25
  5. Step 5: Solve for x
    x = 6,472,236,126.25/85,209.12
  6. Step 6: Final answer
    x = 75,957.08

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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.