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Finding the Fourth Proportional to 60,787.87, 83,786.84 and 40,637.39

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Solution

The fourth proportional to 60,787.87, 83,786.84 and 40,637.39 is: 56,012.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,787.87 : 83,786.84 = 40,637.39 : x
  2. Step 2: Convert to fraction form
    60,787.87/83,786.84 = 40,637.39/x
  3. Step 3: Cross multiply
    60,787.87x = 83,786.84 × 40,637.39
  4. Step 4: Simplify right side
    60,787.87x = 3,404,878,493.95
  5. Step 5: Solve for x
    x = 3,404,878,493.95/60,787.87
  6. Step 6: Final answer
    x = 56,012.47

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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.