Home / 51,418.67-70,961.37-28,759.76

Finding the Fourth Proportional to 51,418.67, 70,961.37 and 28,759.76

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Solution

The fourth proportional to 51,418.67, 70,961.37 and 28,759.76 is: 39,690.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,418.67 : 70,961.37 = 28,759.76 : x
  2. Step 2: Convert to fraction form
    51,418.67/70,961.37 = 28,759.76/x
  3. Step 3: Cross multiply
    51,418.67x = 70,961.37 × 28,759.76
  4. Step 4: Simplify right side
    51,418.67x = 2,040,831,970.47
  5. Step 5: Solve for x
    x = 2,040,831,970.47/51,418.67
  6. Step 6: Final answer
    x = 39,690.49

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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.