Home / 72,028.69-108,043.07-19,438.18

Finding the Fourth Proportional to 72,028.69, 108,043.07 and 19,438.18

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Solution

The fourth proportional to 72,028.69, 108,043.07 and 19,438.18 is: 29,157.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,028.69 : 108,043.07 = 19,438.18 : x
  2. Step 2: Convert to fraction form
    72,028.69/108,043.07 = 19,438.18/x
  3. Step 3: Cross multiply
    72,028.69x = 108,043.07 × 19,438.18
  4. Step 4: Simplify right side
    72,028.69x = 2,100,160,275.11
  5. Step 5: Solve for x
    x = 2,100,160,275.11/72,028.69
  6. Step 6: Final answer
    x = 29,157.27

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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.