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Finding the Fourth Proportional to 73,693.28, 101,696.68 and 40,159.28

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Solution

The fourth proportional to 73,693.28, 101,696.68 and 40,159.28 is: 55,419.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,693.28 : 101,696.68 = 40,159.28 : x
  2. Step 2: Convert to fraction form
    73,693.28/101,696.68 = 40,159.28/x
  3. Step 3: Cross multiply
    73,693.28x = 101,696.68 × 40,159.28
  4. Step 4: Simplify right side
    73,693.28x = 4,084,065,447.19
  5. Step 5: Solve for x
    x = 4,084,065,447.19/73,693.28
  6. Step 6: Final answer
    x = 55,419.78

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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.