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Finding the Fourth Proportional to 78,443.73, 108,254.73 and 48,246.79

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Solution

The fourth proportional to 78,443.73, 108,254.73 and 48,246.79 is: 66,582.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,443.73 : 108,254.73 = 48,246.79 : x
  2. Step 2: Convert to fraction form
    78,443.73/108,254.73 = 48,246.79/x
  3. Step 3: Cross multiply
    78,443.73x = 108,254.73 × 48,246.79
  4. Step 4: Simplify right side
    78,443.73x = 5,222,943,224.82
  5. Step 5: Solve for x
    x = 5,222,943,224.82/78,443.73
  6. Step 6: Final answer
    x = 66,582.04

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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.