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Finding the Fourth Proportional to 65,695.57, 90,659.85 and 35,480.89

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Solution

The fourth proportional to 65,695.57, 90,659.85 and 35,480.89 is: 48,963.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,695.57 : 90,659.85 = 35,480.89 : x
  2. Step 2: Convert to fraction form
    65,695.57/90,659.85 = 35,480.89/x
  3. Step 3: Cross multiply
    65,695.57x = 90,659.85 × 35,480.89
  4. Step 4: Simplify right side
    65,695.57x = 3,216,692,165.27
  5. Step 5: Solve for x
    x = 3,216,692,165.27/65,695.57
  6. Step 6: Final answer
    x = 48,963.61

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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.