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Finding the Fourth Proportional to 66,325.80, 91,507.14 and 40,805.94

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Solution

The fourth proportional to 66,325.80, 91,507.14 and 40,805.94 is: 56,298.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,325.80 : 91,507.14 = 40,805.94 : x
  2. Step 2: Convert to fraction form
    66,325.80/91,507.14 = 40,805.94/x
  3. Step 3: Cross multiply
    66,325.80x = 91,507.14 × 40,805.94
  4. Step 4: Simplify right side
    66,325.80x = 3,734,034,864.41
  5. Step 5: Solve for x
    x = 3,734,034,864.41/66,325.80
  6. Step 6: Final answer
    x = 56,298.38

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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.