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Finding the Fourth Proportional to 63,921.80, 88,232.82 and 42,705.80

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Solution

The fourth proportional to 63,921.80, 88,232.82 and 42,705.80 is: 58,947.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,921.80 : 88,232.82 = 42,705.80 : x
  2. Step 2: Convert to fraction form
    63,921.80/88,232.82 = 42,705.80/x
  3. Step 3: Cross multiply
    63,921.80x = 88,232.82 × 42,705.80
  4. Step 4: Simplify right side
    63,921.80x = 3,768,053,164.36
  5. Step 5: Solve for x
    x = 3,768,053,164.36/63,921.80
  6. Step 6: Final answer
    x = 58,947.86

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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.