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Finding the Fourth Proportional to 66,016.51, 91,002 and 40,475.59

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Solution

The fourth proportional to 66,016.51, 91,002 and 40,475.59 is: 55,794.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,016.51 : 91,002 = 40,475.59 : x
  2. Step 2: Convert to fraction form
    66,016.51/91,002 = 40,475.59/x
  3. Step 3: Cross multiply
    66,016.51x = 91,002 × 40,475.59
  4. Step 4: Simplify right side
    66,016.51x = 3,683,359,641.18
  5. Step 5: Solve for x
    x = 3,683,359,641.18/66,016.51
  6. Step 6: Final answer
    x = 55,794.52

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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.