Home / 72,515.10-108,783.45-25,764.30

Finding the Fourth Proportional to 72,515.10, 108,783.45 and 25,764.30

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Solution

The fourth proportional to 72,515.10, 108,783.45 and 25,764.30 is: 38,650.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,515.10 : 108,783.45 = 25,764.30 : x
  2. Step 2: Convert to fraction form
    72,515.10/108,783.45 = 25,764.30/x
  3. Step 3: Cross multiply
    72,515.10x = 108,783.45 × 25,764.30
  4. Step 4: Simplify right side
    72,515.10x = 2,802,729,440.84
  5. Step 5: Solve for x
    x = 2,802,729,440.84/72,515.10
  6. Step 6: Final answer
    x = 38,650.29

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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.