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Finding the Fourth Proportional to 66,950.28, 92,399.58 and 38,655.90

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Solution

The fourth proportional to 66,950.28, 92,399.58 and 38,655.90 is: 53,349.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,950.28 : 92,399.58 = 38,655.90 : x
  2. Step 2: Convert to fraction form
    66,950.28/92,399.58 = 38,655.90/x
  3. Step 3: Cross multiply
    66,950.28x = 92,399.58 × 38,655.90
  4. Step 4: Simplify right side
    66,950.28x = 3,571,788,924.52
  5. Step 5: Solve for x
    x = 3,571,788,924.52/66,950.28
  6. Step 6: Final answer
    x = 53,349.87

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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.