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Finding the Fourth Proportional to 66,203.13, 91,362.10 and 35,990.48

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Solution

The fourth proportional to 66,203.13, 91,362.10 and 35,990.48 is: 49,667.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,203.13 : 91,362.10 = 35,990.48 : x
  2. Step 2: Convert to fraction form
    66,203.13/91,362.10 = 35,990.48/x
  3. Step 3: Cross multiply
    66,203.13x = 91,362.10 × 35,990.48
  4. Step 4: Simplify right side
    66,203.13x = 3,288,165,832.81
  5. Step 5: Solve for x
    x = 3,288,165,832.81/66,203.13
  6. Step 6: Final answer
    x = 49,667.83

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1.5x scale

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.