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Finding the Fourth Proportional to 83,679.21, 125,492.90 and 28,262.25

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Solution

The fourth proportional to 83,679.21, 125,492.90 and 28,262.25 is: 42,384.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,679.21 : 125,492.90 = 28,262.25 : x
  2. Step 2: Convert to fraction form
    83,679.21/125,492.90 = 28,262.25/x
  3. Step 3: Cross multiply
    83,679.21x = 125,492.90 × 28,262.25
  4. Step 4: Simplify right side
    83,679.21x = 3,546,711,571.71
  5. Step 5: Solve for x
    x = 3,546,711,571.71/83,679.21
  6. Step 6: Final answer
    x = 42,384.62

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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.