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Finding the Fourth Proportional to 66,958.34, 92,398.20 and 38,663.42

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Solution

The fourth proportional to 66,958.34, 92,398.20 and 38,663.42 is: 53,353.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,958.34 : 92,398.20 = 38,663.42 : x
  2. Step 2: Convert to fraction form
    66,958.34/92,398.20 = 38,663.42/x
  3. Step 3: Cross multiply
    66,958.34x = 92,398.20 × 38,663.42
  4. Step 4: Simplify right side
    66,958.34x = 3,572,430,413.84
  5. Step 5: Solve for x
    x = 3,572,430,413.84/66,958.34
  6. Step 6: Final answer
    x = 53,353.03

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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.