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Finding the Fourth Proportional to 65,965.60, 90,959.28 and 50,824.48

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Solution

The fourth proportional to 65,965.60, 90,959.28 and 50,824.48 is: 70,081.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,965.60 : 90,959.28 = 50,824.48 : x
  2. Step 2: Convert to fraction form
    65,965.60/90,959.28 = 50,824.48/x
  3. Step 3: Cross multiply
    65,965.60x = 90,959.28 × 50,824.48
  4. Step 4: Simplify right side
    65,965.60x = 4,622,958,107.17
  5. Step 5: Solve for x
    x = 4,622,958,107.17/65,965.60
  6. Step 6: Final answer
    x = 70,081.35

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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.