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Finding the Fourth Proportional to 56,634.40, 84,948.90 and 19,190.80

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Solution

The fourth proportional to 56,634.40, 84,948.90 and 19,190.80 is: 28,785.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,634.40 : 84,948.90 = 19,190.80 : x
  2. Step 2: Convert to fraction form
    56,634.40/84,948.90 = 19,190.80/x
  3. Step 3: Cross multiply
    56,634.40x = 84,948.90 × 19,190.80
  4. Step 4: Simplify right side
    56,634.40x = 1,630,237,350.12
  5. Step 5: Solve for x
    x = 1,630,237,350.12/56,634.40
  6. Step 6: Final answer
    x = 28,785.29

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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.