Home / 65,439.15-90,279.12-41,557.11

Finding the Fourth Proportional to 65,439.15, 90,279.12 and 41,557.11

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Solution

The fourth proportional to 65,439.15, 90,279.12 and 41,557.11 is: 57,331.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,439.15 : 90,279.12 = 41,557.11 : x
  2. Step 2: Convert to fraction form
    65,439.15/90,279.12 = 41,557.11/x
  3. Step 3: Cross multiply
    65,439.15x = 90,279.12 × 41,557.11
  4. Step 4: Simplify right side
    65,439.15x = 3,751,739,320.54
  5. Step 5: Solve for x
    x = 3,751,739,320.54/65,439.15
  6. Step 6: Final answer
    x = 57,331.72

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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.