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Finding the Fourth Proportional to 65,695.51, 90,659.79 and 35,480.83

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Solution

The fourth proportional to 65,695.51, 90,659.79 and 35,480.83 is: 48,963.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,695.51 : 90,659.79 = 35,480.83 : x
  2. Step 2: Convert to fraction form
    65,695.51/90,659.79 = 35,480.83/x
  3. Step 3: Cross multiply
    65,695.51x = 90,659.79 × 35,480.83
  4. Step 4: Simplify right side
    65,695.51x = 3,216,684,596.83
  5. Step 5: Solve for x
    x = 3,216,684,596.83/65,695.51
  6. Step 6: Final answer
    x = 48,963.54

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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.