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Finding the Fourth Proportional to 81,203.36, 112,060.28 and 45,393.36

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Solution

The fourth proportional to 81,203.36, 112,060.28 and 45,393.36 is: 62,642.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,203.36 : 112,060.28 = 45,393.36 : x
  2. Step 2: Convert to fraction form
    81,203.36/112,060.28 = 45,393.36/x
  3. Step 3: Cross multiply
    81,203.36x = 112,060.28 × 45,393.36
  4. Step 4: Simplify right side
    81,203.36x = 5,086,792,631.74
  5. Step 5: Solve for x
    x = 5,086,792,631.74/81,203.36
  6. Step 6: Final answer
    x = 62,642.64

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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.