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Finding the Fourth Proportional to 61,672, 85,107.36 and 33,377.90

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Solution

The fourth proportional to 61,672, 85,107.36 and 33,377.90 is: 46,061.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,672 : 85,107.36 = 33,377.90 : x
  2. Step 2: Convert to fraction form
    61,672/85,107.36 = 33,377.90/x
  3. Step 3: Cross multiply
    61,672x = 85,107.36 × 33,377.90
  4. Step 4: Simplify right side
    61,672x = 2,840,704,951.34
  5. Step 5: Solve for x
    x = 2,840,704,951.34/61,672
  6. Step 6: Final answer
    x = 46,061.50

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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.