Home / 66,231.16-91,353.54-55,299.16

Finding the Fourth Proportional to 66,231.16, 91,353.54 and 55,299.16

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Solution

The fourth proportional to 66,231.16, 91,353.54 and 55,299.16 is: 76,274.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,231.16 : 91,353.54 = 55,299.16 : x
  2. Step 2: Convert to fraction form
    66,231.16/91,353.54 = 55,299.16/x
  3. Step 3: Cross multiply
    66,231.16x = 91,353.54 × 55,299.16
  4. Step 4: Simplify right side
    66,231.16x = 5,051,774,025.03
  5. Step 5: Solve for x
    x = 5,051,774,025.03/66,231.16
  6. Step 6: Final answer
    x = 76,274.88

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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.