Home / 51,380.16-70,895.36-28,719.60

Finding the Fourth Proportional to 51,380.16, 70,895.36 and 28,719.60

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Solution

The fourth proportional to 51,380.16, 70,895.36 and 28,719.60 is: 39,627.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,380.16 : 70,895.36 = 28,719.60 : x
  2. Step 2: Convert to fraction form
    51,380.16/70,895.36 = 28,719.60/x
  3. Step 3: Cross multiply
    51,380.16x = 70,895.36 × 28,719.60
  4. Step 4: Simplify right side
    51,380.16x = 2,036,086,381.06
  5. Step 5: Solve for x
    x = 2,036,086,381.06/51,380.16
  6. Step 6: Final answer
    x = 39,627.87

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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.