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Finding the Fourth Proportional to 56,220.88, 84,344.12 and 19,282.64

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Solution

The fourth proportional to 56,220.88, 84,344.12 and 19,282.64 is: 28,928.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,220.88 : 84,344.12 = 19,282.64 : x
  2. Step 2: Convert to fraction form
    56,220.88/84,344.12 = 19,282.64/x
  3. Step 3: Cross multiply
    56,220.88x = 84,344.12 × 19,282.64
  4. Step 4: Simplify right side
    56,220.88x = 1,626,377,302.08
  5. Step 5: Solve for x
    x = 1,626,377,302.08/56,220.88
  6. Step 6: Final answer
    x = 28,928.35

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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.