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Finding the Fourth Proportional to 107,549.79, 161,321.04 and 40,987.50

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Solution

The fourth proportional to 107,549.79, 161,321.04 and 40,987.50 is: 61,479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,549.79 : 161,321.04 = 40,987.50 : x
  2. Step 2: Convert to fraction form
    107,549.79/161,321.04 = 40,987.50/x
  3. Step 3: Cross multiply
    107,549.79x = 161,321.04 × 40,987.50
  4. Step 4: Simplify right side
    107,549.79x = 6,612,146,127
  5. Step 5: Solve for x
    x = 6,612,146,127/107,549.79
  6. Step 6: Final answer
    x = 61,479.86

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.