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Finding the Fourth Proportional to 41,145.78, 61,718.73 and 9,981.03

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Solution

The fourth proportional to 41,145.78, 61,718.73 and 9,981.03 is: 14,971.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,145.78 : 61,718.73 = 9,981.03 : x
  2. Step 2: Convert to fraction form
    41,145.78/61,718.73 = 9,981.03/x
  3. Step 3: Cross multiply
    41,145.78x = 61,718.73 × 9,981.03
  4. Step 4: Simplify right side
    41,145.78x = 616,016,495.69
  5. Step 5: Solve for x
    x = 616,016,495.69/41,145.78
  6. Step 6: Final answer
    x = 14,971.56

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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.