Home / 81,900.24-122,701.32-56,887.44

Finding the Fourth Proportional to 81,900.24, 122,701.32 and 56,887.44

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Solution

The fourth proportional to 81,900.24, 122,701.32 and 56,887.44 is: 85,227.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,900.24 : 122,701.32 = 56,887.44 : x
  2. Step 2: Convert to fraction form
    81,900.24/122,701.32 = 56,887.44/x
  3. Step 3: Cross multiply
    81,900.24x = 122,701.32 × 56,887.44
  4. Step 4: Simplify right side
    81,900.24x = 6,980,163,979.42
  5. Step 5: Solve for x
    x = 6,980,163,979.42/81,900.24
  6. Step 6: Final answer
    x = 85,227.64

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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.