Home / 51,133.50-70,570.71-28,781.82

Finding the Fourth Proportional to 51,133.50, 70,570.71 and 28,781.82

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Solution

The fourth proportional to 51,133.50, 70,570.71 and 28,781.82 is: 39,722.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,133.50 : 70,570.71 = 28,781.82 : x
  2. Step 2: Convert to fraction form
    51,133.50/70,570.71 = 28,781.82/x
  3. Step 3: Cross multiply
    51,133.50x = 70,570.71 × 28,781.82
  4. Step 4: Simplify right side
    51,133.50x = 2,031,153,472.49
  5. Step 5: Solve for x
    x = 2,031,153,472.49/51,133.50
  6. Step 6: Final answer
    x = 39,722.56

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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.