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Finding the Fourth Proportional to 85,874.10, 128,774.70 and 41,514.45

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Solution

The fourth proportional to 85,874.10, 128,774.70 and 41,514.45 is: 62,254.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,874.10 : 128,774.70 = 41,514.45 : x
  2. Step 2: Convert to fraction form
    85,874.10/128,774.70 = 41,514.45/x
  3. Step 3: Cross multiply
    85,874.10x = 128,774.70 × 41,514.45
  4. Step 4: Simplify right side
    85,874.10x = 5,346,010,844.42
  5. Step 5: Solve for x
    x = 5,346,010,844.42/85,874.10
  6. Step 6: Final answer
    x = 62,254.05

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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.