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Finding the Fourth Proportional to 66,872.70, 92,314.01 and 42,705.34

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Solution

The fourth proportional to 66,872.70, 92,314.01 and 42,705.34 is: 58,952.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,872.70 : 92,314.01 = 42,705.34 : x
  2. Step 2: Convert to fraction form
    66,872.70/92,314.01 = 42,705.34/x
  3. Step 3: Cross multiply
    66,872.70x = 92,314.01 × 42,705.34
  4. Step 4: Simplify right side
    66,872.70x = 3,942,301,059.79
  5. Step 5: Solve for x
    x = 3,942,301,059.79/66,872.70
  6. Step 6: Final answer
    x = 58,952.32

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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.