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Finding the Fourth Proportional to 71,578.64, 98,787.63 and 43,284.53

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Solution

The fourth proportional to 71,578.64, 98,787.63 and 43,284.53 is: 59,738.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,578.64 : 98,787.63 = 43,284.53 : x
  2. Step 2: Convert to fraction form
    71,578.64/98,787.63 = 43,284.53/x
  3. Step 3: Cross multiply
    71,578.64x = 98,787.63 × 43,284.53
  4. Step 4: Simplify right side
    71,578.64x = 4,275,976,134.36
  5. Step 5: Solve for x
    x = 4,275,976,134.36/71,578.64
  6. Step 6: Final answer
    x = 59,738.16

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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.