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Finding the Fourth Proportional to 103,080.81, 154,475.42 and 43,856.85

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Solution

The fourth proportional to 103,080.81, 154,475.42 and 43,856.85 is: 65,723.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,080.81 : 154,475.42 = 43,856.85 : x
  2. Step 2: Convert to fraction form
    103,080.81/154,475.42 = 43,856.85/x
  3. Step 3: Cross multiply
    103,080.81x = 154,475.42 × 43,856.85
  4. Step 4: Simplify right side
    103,080.81x = 6,774,805,104.34
  5. Step 5: Solve for x
    x = 6,774,805,104.34/103,080.81
  6. Step 6: Final answer
    x = 65,723.24

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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.