Home / 47,409.40-65,422.28-28,310.72

Finding the Fourth Proportional to 47,409.40, 65,422.28 and 28,310.72

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Solution

The fourth proportional to 47,409.40, 65,422.28 and 28,310.72 is: 39,067.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,409.40 : 65,422.28 = 28,310.72 : x
  2. Step 2: Convert to fraction form
    47,409.40/65,422.28 = 28,310.72/x
  3. Step 3: Cross multiply
    47,409.40x = 65,422.28 × 28,310.72
  4. Step 4: Simplify right side
    47,409.40x = 1,852,151,850.84
  5. Step 5: Solve for x
    x = 1,852,151,850.84/47,409.40
  6. Step 6: Final answer
    x = 39,067.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.