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Finding the Fourth Proportional to 85,514.87, 128,291.24 and 29,353.72

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Solution

The fourth proportional to 85,514.87, 128,291.24 and 29,353.72 is: 44,037.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,514.87 : 128,291.24 = 29,353.72 : x
  2. Step 2: Convert to fraction form
    85,514.87/128,291.24 = 29,353.72/x
  3. Step 3: Cross multiply
    85,514.87x = 128,291.24 × 29,353.72
  4. Step 4: Simplify right side
    85,514.87x = 3,765,824,990.64
  5. Step 5: Solve for x
    x = 3,765,824,990.64/85,514.87
  6. Step 6: Final answer
    x = 44,037.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.