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Finding the Fourth Proportional to 61,008.60, 84,189 and 34,145.88

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Solution

The fourth proportional to 61,008.60, 84,189 and 34,145.88 is: 47,119.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,008.60 : 84,189 = 34,145.88 : x
  2. Step 2: Convert to fraction form
    61,008.60/84,189 = 34,145.88/x
  3. Step 3: Cross multiply
    61,008.60x = 84,189 × 34,145.88
  4. Step 4: Simplify right side
    61,008.60x = 2,874,707,491.32
  5. Step 5: Solve for x
    x = 2,874,707,491.32/61,008.60
  6. Step 6: Final answer
    x = 47,119.71

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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.