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Finding the Fourth Proportional to 66,406.91, 91,674.74 and 42,232.19

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Solution

The fourth proportional to 66,406.91, 91,674.74 and 42,232.19 is: 58,301.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,406.91 : 91,674.74 = 42,232.19 : x
  2. Step 2: Convert to fraction form
    66,406.91/91,674.74 = 42,232.19/x
  3. Step 3: Cross multiply
    66,406.91x = 91,674.74 × 42,232.19
  4. Step 4: Simplify right side
    66,406.91x = 3,871,624,685.09
  5. Step 5: Solve for x
    x = 3,871,624,685.09/66,406.91
  6. Step 6: Final answer
    x = 58,301.54

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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.