Home / 42,729.22-64,107.51-20,544.22

Finding the Fourth Proportional to 42,729.22, 64,107.51 and 20,544.22

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Solution

The fourth proportional to 42,729.22, 64,107.51 and 20,544.22 is: 30,822.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,729.22 : 64,107.51 = 20,544.22 : x
  2. Step 2: Convert to fraction form
    42,729.22/64,107.51 = 20,544.22/x
  3. Step 3: Cross multiply
    42,729.22x = 64,107.51 × 20,544.22
  4. Step 4: Simplify right side
    42,729.22x = 1,317,038,789.09
  5. Step 5: Solve for x
    x = 1,317,038,789.09/42,729.22
  6. Step 6: Final answer
    x = 30,822.91

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1.5x scale

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.