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Finding the Fourth Proportional to 36,640.70, 54,964.53 and 9,987.02

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Solution

The fourth proportional to 36,640.70, 54,964.53 and 9,987.02 is: 14,981.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,640.70 : 54,964.53 = 9,987.02 : x
  2. Step 2: Convert to fraction form
    36,640.70/54,964.53 = 9,987.02/x
  3. Step 3: Cross multiply
    36,640.70x = 54,964.53 × 9,987.02
  4. Step 4: Simplify right side
    36,640.70x = 548,931,860.40
  5. Step 5: Solve for x
    x = 548,931,860.40/36,640.70
  6. Step 6: Final answer
    x = 14,981.48

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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.