Home / 83,135.76-124,703.64-20,806.26

Finding the Fourth Proportional to 83,135.76, 124,703.64 and 20,806.26

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Solution

The fourth proportional to 83,135.76, 124,703.64 and 20,806.26 is: 31,209.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,135.76 : 124,703.64 = 20,806.26 : x
  2. Step 2: Convert to fraction form
    83,135.76/124,703.64 = 20,806.26/x
  3. Step 3: Cross multiply
    83,135.76x = 124,703.64 × 20,806.26
  4. Step 4: Simplify right side
    83,135.76x = 2,594,616,356.79
  5. Step 5: Solve for x
    x = 2,594,616,356.79/83,135.76
  6. Step 6: Final answer
    x = 31,209.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.