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Finding the Fourth Proportional to 109,362.48, 150,914.64 and 61,618.65

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Solution

The fourth proportional to 109,362.48, 150,914.64 and 61,618.65 is: 85,030.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,362.48 : 150,914.64 = 61,618.65 : x
  2. Step 2: Convert to fraction form
    109,362.48/150,914.64 = 61,618.65/x
  3. Step 3: Cross multiply
    109,362.48x = 150,914.64 × 61,618.65
  4. Step 4: Simplify right side
    109,362.48x = 9,299,156,382.04
  5. Step 5: Solve for x
    x = 9,299,156,382.04/109,362.48
  6. Step 6: Final answer
    x = 85,030.59

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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.