Home / 67,085.15-100,642.30-20,341.67

Finding the Fourth Proportional to 67,085.15, 100,642.30 and 20,341.67

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Solution

The fourth proportional to 67,085.15, 100,642.30 and 20,341.67 is: 30,516.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,085.15 : 100,642.30 = 20,341.67 : x
  2. Step 2: Convert to fraction form
    67,085.15/100,642.30 = 20,341.67/x
  3. Step 3: Cross multiply
    67,085.15x = 100,642.30 × 20,341.67
  4. Step 4: Simplify right side
    67,085.15x = 2,047,231,900.58
  5. Step 5: Solve for x
    x = 2,047,231,900.58/67,085.15
  6. Step 6: Final answer
    x = 30,516.92

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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.