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Finding the Fourth Proportional to 85,967.70, 128,842.20 and 41,498.70

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Solution

The fourth proportional to 85,967.70, 128,842.20 and 41,498.70 is: 62,195.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,967.70 : 128,842.20 = 41,498.70 : x
  2. Step 2: Convert to fraction form
    85,967.70/128,842.20 = 41,498.70/x
  3. Step 3: Cross multiply
    85,967.70x = 128,842.20 × 41,498.70
  4. Step 4: Simplify right side
    85,967.70x = 5,346,783,805.14
  5. Step 5: Solve for x
    x = 5,346,783,805.14/85,967.70
  6. Step 6: Final answer
    x = 62,195.26

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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.