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Finding the Fourth Proportional to 99,681.48, 149,620.62 and 43,560.32

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Solution

The fourth proportional to 99,681.48, 149,620.62 and 43,560.32 is: 65,383.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,681.48 : 149,620.62 = 43,560.32 : x
  2. Step 2: Convert to fraction form
    99,681.48/149,620.62 = 43,560.32/x
  3. Step 3: Cross multiply
    99,681.48x = 149,620.62 × 43,560.32
  4. Step 4: Simplify right side
    99,681.48x = 6,517,522,085.80
  5. Step 5: Solve for x
    x = 6,517,522,085.80/99,681.48
  6. Step 6: Final answer
    x = 65,383.48

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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.