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Finding the Fourth Proportional to 69,606, 96,056.40 and 39,798

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Solution

The fourth proportional to 69,606, 96,056.40 and 39,798 is: 54,921.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,606 : 96,056.40 = 39,798 : x
  2. Step 2: Convert to fraction form
    69,606/96,056.40 = 39,798/x
  3. Step 3: Cross multiply
    69,606x = 96,056.40 × 39,798
  4. Step 4: Simplify right side
    69,606x = 3,822,852,607.20
  5. Step 5: Solve for x
    x = 3,822,852,607.20/69,606
  6. Step 6: Final answer
    x = 54,921.31

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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.