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Finding the Fourth Proportional to 81,701.37, 112,747.95 and 45,891.40

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Solution

The fourth proportional to 81,701.37, 112,747.95 and 45,891.40 is: 63,330.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,701.37 : 112,747.95 = 45,891.40 : x
  2. Step 2: Convert to fraction form
    81,701.37/112,747.95 = 45,891.40/x
  3. Step 3: Cross multiply
    81,701.37x = 112,747.95 × 45,891.40
  4. Step 4: Simplify right side
    81,701.37x = 5,174,161,272.63
  5. Step 5: Solve for x
    x = 5,174,161,272.63/81,701.37
  6. Step 6: Final answer
    x = 63,330.17

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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.