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Finding the Fourth Proportional to 65,840.79, 90,859.67 and 35,625.45

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Solution

The fourth proportional to 65,840.79, 90,859.67 and 35,625.45 is: 49,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,840.79 : 90,859.67 = 35,625.45 : x
  2. Step 2: Convert to fraction form
    65,840.79/90,859.67 = 35,625.45/x
  3. Step 3: Cross multiply
    65,840.79x = 90,859.67 × 35,625.45
  4. Step 4: Simplify right side
    65,840.79x = 3,236,915,998.18
  5. Step 5: Solve for x
    x = 3,236,915,998.18/65,840.79
  6. Step 6: Final answer
    x = 49,162.78

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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.