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Finding the Fourth Proportional to 57,748.70, 86,623.05 and 53,428.70

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Solution

The fourth proportional to 57,748.70, 86,623.05 and 53,428.70 is: 80,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,748.70 : 86,623.05 = 53,428.70 : x
  2. Step 2: Convert to fraction form
    57,748.70/86,623.05 = 53,428.70/x
  3. Step 3: Cross multiply
    57,748.70x = 86,623.05 × 53,428.70
  4. Step 4: Simplify right side
    57,748.70x = 4,628,156,951.54
  5. Step 5: Solve for x
    x = 4,628,156,951.54/57,748.70
  6. Step 6: Final answer
    x = 80,143.05

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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.