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Finding the Fourth Proportional to 81,355.56, 112,275.56 and 53,060.64

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Solution

The fourth proportional to 81,355.56, 112,275.56 and 53,060.64 is: 73,226.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,355.56 : 112,275.56 = 53,060.64 : x
  2. Step 2: Convert to fraction form
    81,355.56/112,275.56 = 53,060.64/x
  3. Step 3: Cross multiply
    81,355.56x = 112,275.56 × 53,060.64
  4. Step 4: Simplify right side
    81,355.56x = 5,957,413,069.96
  5. Step 5: Solve for x
    x = 5,957,413,069.96/81,355.56
  6. Step 6: Final answer
    x = 73,226.87

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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.