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Finding the Fourth Proportional to 69,335.60, 104,019.05 and 21,953.57

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Solution

The fourth proportional to 69,335.60, 104,019.05 and 21,953.57 is: 32,935.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,335.60 : 104,019.05 = 21,953.57 : x
  2. Step 2: Convert to fraction form
    69,335.60/104,019.05 = 21,953.57/x
  3. Step 3: Cross multiply
    69,335.60x = 104,019.05 × 21,953.57
  4. Step 4: Simplify right side
    69,335.60x = 2,283,589,030.30
  5. Step 5: Solve for x
    x = 2,283,589,030.30/69,335.60
  6. Step 6: Final answer
    x = 32,935.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.