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Finding the Fourth Proportional to 65,257.50, 90,055.44 and 35,449.50

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Solution

The fourth proportional to 65,257.50, 90,055.44 and 35,449.50 is: 48,920.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,257.50 : 90,055.44 = 35,449.50 : x
  2. Step 2: Convert to fraction form
    65,257.50/90,055.44 = 35,449.50/x
  3. Step 3: Cross multiply
    65,257.50x = 90,055.44 × 35,449.50
  4. Step 4: Simplify right side
    65,257.50x = 3,192,420,320.28
  5. Step 5: Solve for x
    x = 3,192,420,320.28/65,257.50
  6. Step 6: Final answer
    x = 48,920.36

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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.