Home / 81,528.29-122,252.94-47,803.53

Finding the Fourth Proportional to 81,528.29, 122,252.94 and 47,803.53

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Solution

The fourth proportional to 81,528.29, 122,252.94 and 47,803.53 is: 71,682.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,528.29 : 122,252.94 = 47,803.53 : x
  2. Step 2: Convert to fraction form
    81,528.29/122,252.94 = 47,803.53/x
  3. Step 3: Cross multiply
    81,528.29x = 122,252.94 × 47,803.53
  4. Step 4: Simplify right side
    81,528.29x = 5,844,121,845.86
  5. Step 5: Solve for x
    x = 5,844,121,845.86/81,528.29
  6. Step 6: Final answer
    x = 71,682.13

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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.