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Finding the Fourth Proportional to 56,419.92, 84,619.22 and 28,332.45

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Solution

The fourth proportional to 56,419.92, 84,619.22 and 28,332.45 is: 42,493.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,419.92 : 84,619.22 = 28,332.45 : x
  2. Step 2: Convert to fraction form
    56,419.92/84,619.22 = 28,332.45/x
  3. Step 3: Cross multiply
    56,419.92x = 84,619.22 × 28,332.45
  4. Step 4: Simplify right side
    56,419.92x = 2,397,469,678.03
  5. Step 5: Solve for x
    x = 2,397,469,678.03/56,419.92
  6. Step 6: Final answer
    x = 42,493.32

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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.