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Finding the Fourth Proportional to 81,461.57, 122,211.48 and 25,298.78

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Solution

The fourth proportional to 81,461.57, 122,211.48 and 25,298.78 is: 37,954.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,461.57 : 122,211.48 = 25,298.78 : x
  2. Step 2: Convert to fraction form
    81,461.57/122,211.48 = 25,298.78/x
  3. Step 3: Cross multiply
    81,461.57x = 122,211.48 × 25,298.78
  4. Step 4: Simplify right side
    81,461.57x = 3,091,801,345.99
  5. Step 5: Solve for x
    x = 3,091,801,345.99/81,461.57
  6. Step 6: Final answer
    x = 37,954.11

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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.