Home / 65,620.16-90,549.60-40,464.80

Finding the Fourth Proportional to 65,620.16, 90,549.60 and 40,464.80

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Solution

The fourth proportional to 65,620.16, 90,549.60 and 40,464.80 is: 55,837.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,620.16 : 90,549.60 = 40,464.80 : x
  2. Step 2: Convert to fraction form
    65,620.16/90,549.60 = 40,464.80/x
  3. Step 3: Cross multiply
    65,620.16x = 90,549.60 × 40,464.80
  4. Step 4: Simplify right side
    65,620.16x = 3,664,071,454.08
  5. Step 5: Solve for x
    x = 3,664,071,454.08/65,620.16
  6. Step 6: Final answer
    x = 55,837.59

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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.