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Finding the Fourth Proportional to 45,776.72, 63,122 and 39,755.20

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Solution

The fourth proportional to 45,776.72, 63,122 and 39,755.20 is: 54,818.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,776.72 : 63,122 = 39,755.20 : x
  2. Step 2: Convert to fraction form
    45,776.72/63,122 = 39,755.20/x
  3. Step 3: Cross multiply
    45,776.72x = 63,122 × 39,755.20
  4. Step 4: Simplify right side
    45,776.72x = 2,509,427,734.40
  5. Step 5: Solve for x
    x = 2,509,427,734.40/45,776.72
  6. Step 6: Final answer
    x = 54,818.86

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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.