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Finding the Fourth Proportional to 66,994.34, 92,448.72 and 39,771.56

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Solution

The fourth proportional to 66,994.34, 92,448.72 and 39,771.56 is: 54,882.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,994.34 : 92,448.72 = 39,771.56 : x
  2. Step 2: Convert to fraction form
    66,994.34/92,448.72 = 39,771.56/x
  3. Step 3: Cross multiply
    66,994.34x = 92,448.72 × 39,771.56
  4. Step 4: Simplify right side
    66,994.34x = 3,676,829,814.40
  5. Step 5: Solve for x
    x = 3,676,829,814.40/66,994.34
  6. Step 6: Final answer
    x = 54,882.69

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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.