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Finding the Fourth Proportional to 65,300.57, 90,111.03 and 36,618.06

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Solution

The fourth proportional to 65,300.57, 90,111.03 and 36,618.06 is: 50,530.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,300.57 : 90,111.03 = 36,618.06 : x
  2. Step 2: Convert to fraction form
    65,300.57/90,111.03 = 36,618.06/x
  3. Step 3: Cross multiply
    65,300.57x = 90,111.03 × 36,618.06
  4. Step 4: Simplify right side
    65,300.57x = 3,299,691,103.20
  5. Step 5: Solve for x
    x = 3,299,691,103.20/65,300.57
  6. Step 6: Final answer
    x = 50,530.82

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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.