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Finding the Fourth Proportional to 36,678.83, 54,981.03 and 20,851.16

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Solution

The fourth proportional to 36,678.83, 54,981.03 and 20,851.16 is: 31,255.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,678.83 : 54,981.03 = 20,851.16 : x
  2. Step 2: Convert to fraction form
    36,678.83/54,981.03 = 20,851.16/x
  3. Step 3: Cross multiply
    36,678.83x = 54,981.03 × 20,851.16
  4. Step 4: Simplify right side
    36,678.83x = 1,146,418,403.40
  5. Step 5: Solve for x
    x = 1,146,418,403.40/36,678.83
  6. Step 6: Final answer
    x = 31,255.59

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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.