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Finding the Fourth Proportional to 61,305.40, 91,958.10 and 21,863.80

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Solution

The fourth proportional to 61,305.40, 91,958.10 and 21,863.80 is: 32,795.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,305.40 : 91,958.10 = 21,863.80 : x
  2. Step 2: Convert to fraction form
    61,305.40/91,958.10 = 21,863.80/x
  3. Step 3: Cross multiply
    61,305.40x = 91,958.10 × 21,863.80
  4. Step 4: Simplify right side
    61,305.40x = 2,010,553,506.78
  5. Step 5: Solve for x
    x = 2,010,553,506.78/61,305.40
  6. Step 6: Final answer
    x = 32,795.70

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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.