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Finding the Fourth Proportional to 72,308.36, 99,734.10 and 66,359.24

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Solution

The fourth proportional to 72,308.36, 99,734.10 and 66,359.24 is: 91,528.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,308.36 : 99,734.10 = 66,359.24 : x
  2. Step 2: Convert to fraction form
    72,308.36/99,734.10 = 66,359.24/x
  3. Step 3: Cross multiply
    72,308.36x = 99,734.10 × 66,359.24
  4. Step 4: Simplify right side
    72,308.36x = 6,618,279,078.08
  5. Step 5: Solve for x
    x = 6,618,279,078.08/72,308.36
  6. Step 6: Final answer
    x = 91,528.55

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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.