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Finding the Fourth Proportional to 66,986.56, 92,412.12 and 38,675.44

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Solution

The fourth proportional to 66,986.56, 92,412.12 and 38,675.44 is: 53,355.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,986.56 : 92,412.12 = 38,675.44 : x
  2. Step 2: Convert to fraction form
    66,986.56/92,412.12 = 38,675.44/x
  3. Step 3: Cross multiply
    66,986.56x = 92,412.12 × 38,675.44
  4. Step 4: Simplify right side
    66,986.56x = 3,574,079,402.33
  5. Step 5: Solve for x
    x = 3,574,079,402.33/66,986.56
  6. Step 6: Final answer
    x = 53,355.17

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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.