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Finding the Fourth Proportional to 65,911.08, 90,956.84 and 35,695.72

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Solution

The fourth proportional to 65,911.08, 90,956.84 and 35,695.72 is: 49,259.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,911.08 : 90,956.84 = 35,695.72 : x
  2. Step 2: Convert to fraction form
    65,911.08/90,956.84 = 35,695.72/x
  3. Step 3: Cross multiply
    65,911.08x = 90,956.84 × 35,695.72
  4. Step 4: Simplify right side
    65,911.08x = 3,246,769,892.72
  5. Step 5: Solve for x
    x = 3,246,769,892.72/65,911.08
  6. Step 6: Final answer
    x = 49,259.85

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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.