Home / 51,431.80-70,972.92-28,460.28

Finding the Fourth Proportional to 51,431.80, 70,972.92 and 28,460.28

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Solution

The fourth proportional to 51,431.80, 70,972.92 and 28,460.28 is: 39,273.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.80 : 70,972.92 = 28,460.28 : x
  2. Step 2: Convert to fraction form
    51,431.80/70,972.92 = 28,460.28/x
  3. Step 3: Cross multiply
    51,431.80x = 70,972.92 × 28,460.28
  4. Step 4: Simplify right side
    51,431.80x = 2,019,909,175.62
  5. Step 5: Solve for x
    x = 2,019,909,175.62/51,431.80
  6. Step 6: Final answer
    x = 39,273.55

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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.