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Finding the Fourth Proportional to 56,716.40, 85,074.60 and 55,404.20

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Solution

The fourth proportional to 56,716.40, 85,074.60 and 55,404.20 is: 83,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,716.40 : 85,074.60 = 55,404.20 : x
  2. Step 2: Convert to fraction form
    56,716.40/85,074.60 = 55,404.20/x
  3. Step 3: Cross multiply
    56,716.40x = 85,074.60 × 55,404.20
  4. Step 4: Simplify right side
    56,716.40x = 4,713,490,153.32
  5. Step 5: Solve for x
    x = 4,713,490,153.32/56,716.40
  6. Step 6: Final answer
    x = 83,106.30

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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.