Home / 81,528.79-122,253.69-47,804.03

Finding the Fourth Proportional to 81,528.79, 122,253.69 and 47,804.03

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Solution

The fourth proportional to 81,528.79, 122,253.69 and 47,804.03 is: 71,682.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,528.79 : 122,253.69 = 47,804.03 : x
  2. Step 2: Convert to fraction form
    81,528.79/122,253.69 = 47,804.03/x
  3. Step 3: Cross multiply
    81,528.79x = 122,253.69 × 47,804.03
  4. Step 4: Simplify right side
    81,528.79x = 5,844,218,825.35
  5. Step 5: Solve for x
    x = 5,844,218,825.35/81,528.79
  6. Step 6: Final answer
    x = 71,682.88

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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.