Home / 67,320.07-100,931.50-20,547.43

Finding the Fourth Proportional to 67,320.07, 100,931.50 and 20,547.43

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Solution

The fourth proportional to 67,320.07, 100,931.50 and 20,547.43 is: 30,806.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,320.07 : 100,931.50 = 20,547.43 : x
  2. Step 2: Convert to fraction form
    67,320.07/100,931.50 = 20,547.43/x
  3. Step 3: Cross multiply
    67,320.07x = 100,931.50 × 20,547.43
  4. Step 4: Simplify right side
    67,320.07x = 2,073,882,931.05
  5. Step 5: Solve for x
    x = 2,073,882,931.05/67,320.07
  6. Step 6: Final answer
    x = 30,806.31

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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.