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Finding the Fourth Proportional to 65,239.32, 90,073.65 and 50,104.95

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Solution

The fourth proportional to 65,239.32, 90,073.65 and 50,104.95 is: 69,178.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,239.32 : 90,073.65 = 50,104.95 : x
  2. Step 2: Convert to fraction form
    65,239.32/90,073.65 = 50,104.95/x
  3. Step 3: Cross multiply
    65,239.32x = 90,073.65 × 50,104.95
  4. Step 4: Simplify right side
    65,239.32x = 4,513,135,579.68
  5. Step 5: Solve for x
    x = 4,513,135,579.68/65,239.32
  6. Step 6: Final answer
    x = 69,178.15

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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.