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Finding the Fourth Proportional to 56,677.20, 85,015.80 and 53,221.20

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Solution

The fourth proportional to 56,677.20, 85,015.80 and 53,221.20 is: 79,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,677.20 : 85,015.80 = 53,221.20 : x
  2. Step 2: Convert to fraction form
    56,677.20/85,015.80 = 53,221.20/x
  3. Step 3: Cross multiply
    56,677.20x = 85,015.80 × 53,221.20
  4. Step 4: Simplify right side
    56,677.20x = 4,524,642,894.96
  5. Step 5: Solve for x
    x = 4,524,642,894.96/56,677.20
  6. Step 6: Final answer
    x = 79,831.80

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