Home / 51,121.89-70,539.84-28,460.31

Finding the Fourth Proportional to 51,121.89, 70,539.84 and 28,460.31

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Solution

The fourth proportional to 51,121.89, 70,539.84 and 28,460.31 is: 39,270.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,121.89 : 70,539.84 = 28,460.31 : x
  2. Step 2: Convert to fraction form
    51,121.89/70,539.84 = 28,460.31/x
  3. Step 3: Cross multiply
    51,121.89x = 70,539.84 × 28,460.31
  4. Step 4: Simplify right side
    51,121.89x = 2,007,585,713.75
  5. Step 5: Solve for x
    x = 2,007,585,713.75/51,121.89
  6. Step 6: Final answer
    x = 39,270.57

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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.