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Finding the Fourth Proportional to 51,265.78, 70,744.80 and 28,603.60

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Solution

The fourth proportional to 51,265.78, 70,744.80 and 28,603.60 is: 39,471.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,265.78 : 70,744.80 = 28,603.60 : x
  2. Step 2: Convert to fraction form
    51,265.78/70,744.80 = 28,603.60/x
  3. Step 3: Cross multiply
    51,265.78x = 70,744.80 × 28,603.60
  4. Step 4: Simplify right side
    51,265.78x = 2,023,555,961.28
  5. Step 5: Solve for x
    x = 2,023,555,961.28/51,265.78
  6. Step 6: Final answer
    x = 39,471.87

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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.