Home / 51,101.28-70,515.60-28,438.56

Finding the Fourth Proportional to 51,101.28, 70,515.60 and 28,438.56

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Solution

The fourth proportional to 51,101.28, 70,515.60 and 28,438.56 is: 39,242.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,101.28 : 70,515.60 = 28,438.56 : x
  2. Step 2: Convert to fraction form
    51,101.28/70,515.60 = 28,438.56/x
  3. Step 3: Cross multiply
    51,101.28x = 70,515.60 × 28,438.56
  4. Step 4: Simplify right side
    51,101.28x = 2,005,362,121.54
  5. Step 5: Solve for x
    x = 2,005,362,121.54/51,101.28
  6. Step 6: Final answer
    x = 39,242.89

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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.