Home / 83,109.83-124,664.75-20,780.33

Finding the Fourth Proportional to 83,109.83, 124,664.75 and 20,780.33

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Solution

The fourth proportional to 83,109.83, 124,664.75 and 20,780.33 is: 31,170.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,109.83 : 124,664.75 = 20,780.33 : x
  2. Step 2: Convert to fraction form
    83,109.83/124,664.75 = 20,780.33/x
  3. Step 3: Cross multiply
    83,109.83x = 124,664.75 × 20,780.33
  4. Step 4: Simplify right side
    83,109.83x = 2,590,574,644.37
  5. Step 5: Solve for x
    x = 2,590,574,644.37/83,109.83
  6. Step 6: Final answer
    x = 31,170.50

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1.5x scale

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.