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Finding the Fourth Proportional to 65,987.20, 99,002.53 and 43,887.52

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Solution

The fourth proportional to 65,987.20, 99,002.53 and 43,887.52 is: 65,845.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,987.20 : 99,002.53 = 43,887.52 : x
  2. Step 2: Convert to fraction form
    65,987.20/99,002.53 = 43,887.52/x
  3. Step 3: Cross multiply
    65,987.20x = 99,002.53 × 43,887.52
  4. Step 4: Simplify right side
    65,987.20x = 4,344,975,515.43
  5. Step 5: Solve for x
    x = 4,344,975,515.43/65,987.20
  6. Step 6: Final answer
    x = 65,845.73

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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.