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Finding the Fourth Proportional to 36,518.78, 54,778.14 and 8,816.78

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Solution

The fourth proportional to 36,518.78, 54,778.14 and 8,816.78 is: 13,225.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,518.78 : 54,778.14 = 8,816.78 : x
  2. Step 2: Convert to fraction form
    36,518.78/54,778.14 = 8,816.78/x
  3. Step 3: Cross multiply
    36,518.78x = 54,778.14 × 8,816.78
  4. Step 4: Simplify right side
    36,518.78x = 482,966,809.19
  5. Step 5: Solve for x
    x = 482,966,809.19/36,518.78
  6. Step 6: Final answer
    x = 13,225.16

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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.