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Finding the Fourth Proportional to 91,243.14, 136,829.88 and 43,845

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Solution

The fourth proportional to 91,243.14, 136,829.88 and 43,845 is: 65,750.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,243.14 : 136,829.88 = 43,845 : x
  2. Step 2: Convert to fraction form
    91,243.14/136,829.88 = 43,845/x
  3. Step 3: Cross multiply
    91,243.14x = 136,829.88 × 43,845
  4. Step 4: Simplify right side
    91,243.14x = 5,999,306,088.60
  5. Step 5: Solve for x
    x = 5,999,306,088.60/91,243.14
  6. Step 6: Final answer
    x = 65,750.76

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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.