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Finding the Fourth Proportional to 56,252.60, 84,411.30 and 21,217.40

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Solution

The fourth proportional to 56,252.60, 84,411.30 and 21,217.40 is: 31,838.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,252.60 : 84,411.30 = 21,217.40 : x
  2. Step 2: Convert to fraction form
    56,252.60/84,411.30 = 21,217.40/x
  3. Step 3: Cross multiply
    56,252.60x = 84,411.30 × 21,217.40
  4. Step 4: Simplify right side
    56,252.60x = 1,790,988,316.62
  5. Step 5: Solve for x
    x = 1,790,988,316.62/56,252.60
  6. Step 6: Final answer
    x = 31,838.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.