Home / 85,153.80-117,514.32-47,428.68

Finding the Fourth Proportional to 85,153.80, 117,514.32 and 47,428.68

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Solution

The fourth proportional to 85,153.80, 117,514.32 and 47,428.68 is: 65,452.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,153.80 : 117,514.32 = 47,428.68 : x
  2. Step 2: Convert to fraction form
    85,153.80/117,514.32 = 47,428.68/x
  3. Step 3: Cross multiply
    85,153.80x = 117,514.32 × 47,428.68
  4. Step 4: Simplify right side
    85,153.80x = 5,573,549,078.70
  5. Step 5: Solve for x
    x = 5,573,549,078.70/85,153.80
  6. Step 6: Final answer
    x = 65,452.73

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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.