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Finding the Fourth Proportional to 66,670.98, 92,010.78 and 39,814.62

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Solution

The fourth proportional to 66,670.98, 92,010.78 and 39,814.62 is: 54,947.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,670.98 : 92,010.78 = 39,814.62 : x
  2. Step 2: Convert to fraction form
    66,670.98/92,010.78 = 39,814.62/x
  3. Step 3: Cross multiply
    66,670.98x = 92,010.78 × 39,814.62
  4. Step 4: Simplify right side
    66,670.98x = 3,663,374,241.60
  5. Step 5: Solve for x
    x = 3,663,374,241.60/66,670.98
  6. Step 6: Final answer
    x = 54,947.06

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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.