Home / 78,479.43-108,306.03-42,668.67

Finding the Fourth Proportional to 78,479.43, 108,306.03 and 42,668.67

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Solution

The fourth proportional to 78,479.43, 108,306.03 and 42,668.67 is: 58,885.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,479.43 : 108,306.03 = 42,668.67 : x
  2. Step 2: Convert to fraction form
    78,479.43/108,306.03 = 42,668.67/x
  3. Step 3: Cross multiply
    78,479.43x = 108,306.03 × 42,668.67
  4. Step 4: Simplify right side
    78,479.43x = 4,621,274,253.08
  5. Step 5: Solve for x
    x = 4,621,274,253.08/78,479.43
  6. Step 6: Final answer
    x = 58,885.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.