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Finding the Fourth Proportional to 56,611.20, 84,913.20 and 21,550.08

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Solution

The fourth proportional to 56,611.20, 84,913.20 and 21,550.08 is: 32,323.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,611.20 : 84,913.20 = 21,550.08 : x
  2. Step 2: Convert to fraction form
    56,611.20/84,913.20 = 21,550.08/x
  3. Step 3: Cross multiply
    56,611.20x = 84,913.20 × 21,550.08
  4. Step 4: Simplify right side
    56,611.20x = 1,829,886,253.06
  5. Step 5: Solve for x
    x = 1,829,886,253.06/56,611.20
  6. Step 6: Final answer
    x = 32,323.75

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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.