Home / 81,216.87-121,810.46-36,832.92

Finding the Fourth Proportional to 81,216.87, 121,810.46 and 36,832.92

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Solution

The fourth proportional to 81,216.87, 121,810.46 and 36,832.92 is: 55,242.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,216.87 : 121,810.46 = 36,832.92 : x
  2. Step 2: Convert to fraction form
    81,216.87/121,810.46 = 36,832.92/x
  3. Step 3: Cross multiply
    81,216.87x = 121,810.46 × 36,832.92
  4. Step 4: Simplify right side
    81,216.87x = 4,486,634,744.18
  5. Step 5: Solve for x
    x = 4,486,634,744.18/81,216.87
  6. Step 6: Final answer
    x = 55,242.65

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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.