Home / 51,425.15-70,970.40-28,771.43

Finding the Fourth Proportional to 51,425.15, 70,970.40 and 28,771.43

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Solution

The fourth proportional to 51,425.15, 70,970.40 and 28,771.43 is: 39,706.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,425.15 : 70,970.40 = 28,771.43 : x
  2. Step 2: Convert to fraction form
    51,425.15/70,970.40 = 28,771.43/x
  3. Step 3: Cross multiply
    51,425.15x = 70,970.40 × 28,771.43
  4. Step 4: Simplify right side
    51,425.15x = 2,041,919,540.82
  5. Step 5: Solve for x
    x = 2,041,919,540.82/51,425.15
  6. Step 6: Final answer
    x = 39,706.64

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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.