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Finding the Fourth Proportional to 107,487.42, 148,344.66 and 65,045.04

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Solution

The fourth proportional to 107,487.42, 148,344.66 and 65,045.04 is: 89,769.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,487.42 : 148,344.66 = 65,045.04 : x
  2. Step 2: Convert to fraction form
    107,487.42/148,344.66 = 65,045.04/x
  3. Step 3: Cross multiply
    107,487.42x = 148,344.66 × 65,045.04
  4. Step 4: Simplify right side
    107,487.42x = 9,649,084,343.49
  5. Step 5: Solve for x
    x = 9,649,084,343.49/107,487.42
  6. Step 6: Final answer
    x = 89,769.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.