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Finding the Fourth Proportional to 82,950.17, 124,425.20 and 20,620.67

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Solution

The fourth proportional to 82,950.17, 124,425.20 and 20,620.67 is: 30,930.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,950.17 : 124,425.20 = 20,620.67 : x
  2. Step 2: Convert to fraction form
    82,950.17/124,425.20 = 20,620.67/x
  3. Step 3: Cross multiply
    82,950.17x = 124,425.20 × 20,620.67
  4. Step 4: Simplify right side
    82,950.17x = 2,565,730,263.65
  5. Step 5: Solve for x
    x = 2,565,730,263.65/82,950.17
  6. Step 6: Final answer
    x = 30,930.98

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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.