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Finding the Fourth Proportional to 65,789.79, 90,800.13 and 43,194.32

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Solution

The fourth proportional to 65,789.79, 90,800.13 and 43,194.32 is: 59,614.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,789.79 : 90,800.13 = 43,194.32 : x
  2. Step 2: Convert to fraction form
    65,789.79/90,800.13 = 43,194.32/x
  3. Step 3: Cross multiply
    65,789.79x = 90,800.13 × 43,194.32
  4. Step 4: Simplify right side
    65,789.79x = 3,922,049,417.26
  5. Step 5: Solve for x
    x = 3,922,049,417.26/65,789.79
  6. Step 6: Final answer
    x = 59,614.86

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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.