Home / 51,385.71-70,908.35-31,239.80

Finding the Fourth Proportional to 51,385.71, 70,908.35 and 31,239.80

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Solution

The fourth proportional to 51,385.71, 70,908.35 and 31,239.80 is: 43,108.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,385.71 : 70,908.35 = 31,239.80 : x
  2. Step 2: Convert to fraction form
    51,385.71/70,908.35 = 31,239.80/x
  3. Step 3: Cross multiply
    51,385.71x = 70,908.35 × 31,239.80
  4. Step 4: Simplify right side
    51,385.71x = 2,215,162,395.89
  5. Step 5: Solve for x
    x = 2,215,162,395.89/51,385.71
  6. Step 6: Final answer
    x = 43,108.53

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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.