Home / 72,221.09-108,314.28-30,101.76

Finding the Fourth Proportional to 72,221.09, 108,314.28 and 30,101.76

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Solution

The fourth proportional to 72,221.09, 108,314.28 and 30,101.76 is: 45,145.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,221.09 : 108,314.28 = 30,101.76 : x
  2. Step 2: Convert to fraction form
    72,221.09/108,314.28 = 30,101.76/x
  3. Step 3: Cross multiply
    72,221.09x = 108,314.28 × 30,101.76
  4. Step 4: Simplify right side
    72,221.09x = 3,260,450,461.13
  5. Step 5: Solve for x
    x = 3,260,450,461.13/72,221.09
  6. Step 6: Final answer
    x = 45,145.41

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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.