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Finding the Fourth Proportional to 43,987.70, 65,980.62 and 10,707.95

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Solution

The fourth proportional to 43,987.70, 65,980.62 and 10,707.95 is: 16,061.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,987.70 : 65,980.62 = 10,707.95 : x
  2. Step 2: Convert to fraction form
    43,987.70/65,980.62 = 10,707.95/x
  3. Step 3: Cross multiply
    43,987.70x = 65,980.62 × 10,707.95
  4. Step 4: Simplify right side
    43,987.70x = 706,517,179.93
  5. Step 5: Solve for x
    x = 706,517,179.93/43,987.70
  6. Step 6: Final answer
    x = 16,061.70

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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.