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Finding the Fourth Proportional to 69,565.36, 96,015.36 and 42,721.96

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Solution

The fourth proportional to 69,565.36, 96,015.36 and 42,721.96 is: 58,965.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,565.36 : 96,015.36 = 42,721.96 : x
  2. Step 2: Convert to fraction form
    69,565.36/96,015.36 = 42,721.96/x
  3. Step 3: Cross multiply
    69,565.36x = 96,015.36 × 42,721.96
  4. Step 4: Simplify right side
    69,565.36x = 4,101,964,369.31
  5. Step 5: Solve for x
    x = 4,101,964,369.31/69,565.36
  6. Step 6: Final answer
    x = 58,965.62

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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.