Home / 83,620.86-125,430.78-20,441.32

Finding the Fourth Proportional to 83,620.86, 125,430.78 and 20,441.32

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Solution

The fourth proportional to 83,620.86, 125,430.78 and 20,441.32 is: 30,661.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,620.86 : 125,430.78 = 20,441.32 : x
  2. Step 2: Convert to fraction form
    83,620.86/125,430.78 = 20,441.32/x
  3. Step 3: Cross multiply
    83,620.86x = 125,430.78 × 20,441.32
  4. Step 4: Simplify right side
    83,620.86x = 2,563,970,711.83
  5. Step 5: Solve for x
    x = 2,563,970,711.83/83,620.86
  6. Step 6: Final answer
    x = 30,661.86

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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.