Home / 72,920.75-109,381.58-20,330.69

Finding the Fourth Proportional to 72,920.75, 109,381.58 and 20,330.69

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Solution

The fourth proportional to 72,920.75, 109,381.58 and 20,330.69 is: 30,496.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,920.75 : 109,381.58 = 20,330.69 : x
  2. Step 2: Convert to fraction form
    72,920.75/109,381.58 = 20,330.69/x
  3. Step 3: Cross multiply
    72,920.75x = 109,381.58 × 20,330.69
  4. Step 4: Simplify right side
    72,920.75x = 2,223,802,994.69
  5. Step 5: Solve for x
    x = 2,223,802,994.69/72,920.75
  6. Step 6: Final answer
    x = 30,496.16

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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.