Home / 51,399.87-70,935.35-28,738.40

Finding the Fourth Proportional to 51,399.87, 70,935.35 and 28,738.40

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Solution

The fourth proportional to 51,399.87, 70,935.35 and 28,738.40 is: 39,660.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,399.87 : 70,935.35 = 28,738.40 : x
  2. Step 2: Convert to fraction form
    51,399.87/70,935.35 = 28,738.40/x
  3. Step 3: Cross multiply
    51,399.87x = 70,935.35 × 28,738.40
  4. Step 4: Simplify right side
    51,399.87x = 2,038,567,964.07
  5. Step 5: Solve for x
    x = 2,038,567,964.07/51,399.87
  6. Step 6: Final answer
    x = 39,660.96

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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.