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Finding the Fourth Proportional to 91,969.20, 138,006.20 and 35,802.02

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Solution

The fourth proportional to 91,969.20, 138,006.20 and 35,802.02 is: 53,723.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,969.20 : 138,006.20 = 35,802.02 : x
  2. Step 2: Convert to fraction form
    91,969.20/138,006.20 = 35,802.02/x
  3. Step 3: Cross multiply
    91,969.20x = 138,006.20 × 35,802.02
  4. Step 4: Simplify right side
    91,969.20x = 4,940,900,898.53
  5. Step 5: Solve for x
    x = 4,940,900,898.53/91,969.20
  6. Step 6: Final answer
    x = 53,723.43

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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.