Home / 85,857.12-118,471.55-47,616.21

Finding the Fourth Proportional to 85,857.12, 118,471.55 and 47,616.21

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Solution

The fourth proportional to 85,857.12, 118,471.55 and 47,616.21 is: 65,704.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,857.12 : 118,471.55 = 47,616.21 : x
  2. Step 2: Convert to fraction form
    85,857.12/118,471.55 = 47,616.21/x
  3. Step 3: Cross multiply
    85,857.12x = 118,471.55 × 47,616.21
  4. Step 4: Simplify right side
    85,857.12x = 5,641,165,965.74
  5. Step 5: Solve for x
    x = 5,641,165,965.74/85,857.12
  6. Step 6: Final answer
    x = 65,704.11

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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.