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Finding the Fourth Proportional to 107,909.52, 161,881.56 and 45,580.56

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Solution

The fourth proportional to 107,909.52, 161,881.56 and 45,580.56 is: 68,378.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,909.52 : 161,881.56 = 45,580.56 : x
  2. Step 2: Convert to fraction form
    107,909.52/161,881.56 = 45,580.56/x
  3. Step 3: Cross multiply
    107,909.52x = 161,881.56 × 45,580.56
  4. Step 4: Simplify right side
    107,909.52x = 7,378,652,158.47
  5. Step 5: Solve for x
    x = 7,378,652,158.47/107,909.52
  6. Step 6: Final answer
    x = 68,378.14

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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.