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Finding the Fourth Proportional to 51,371.76, 70,892.48 and 28,401.48

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Solution

The fourth proportional to 51,371.76, 70,892.48 and 28,401.48 is: 39,193.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,371.76 : 70,892.48 = 28,401.48 : x
  2. Step 2: Convert to fraction form
    51,371.76/70,892.48 = 28,401.48/x
  3. Step 3: Cross multiply
    51,371.76x = 70,892.48 × 28,401.48
  4. Step 4: Simplify right side
    51,371.76x = 2,013,451,352.87
  5. Step 5: Solve for x
    x = 2,013,451,352.87/51,371.76
  6. Step 6: Final answer
    x = 39,193.74

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1.5x scale

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.