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Finding the Fourth Proportional to 80,386.44, 110,903.46 and 48,543.72

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Solution

The fourth proportional to 80,386.44, 110,903.46 and 48,543.72 is: 66,972.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,386.44 : 110,903.46 = 48,543.72 : x
  2. Step 2: Convert to fraction form
    80,386.44/110,903.46 = 48,543.72/x
  3. Step 3: Cross multiply
    80,386.44x = 110,903.46 × 48,543.72
  4. Step 4: Simplify right side
    80,386.44x = 5,383,666,509.27
  5. Step 5: Solve for x
    x = 5,383,666,509.27/80,386.44
  6. Step 6: Final answer
    x = 66,972.32

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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.