Home / 81,585.39-112,589.80-45,778.05

Finding the Fourth Proportional to 81,585.39, 112,589.80 and 45,778.05

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Solution

The fourth proportional to 81,585.39, 112,589.80 and 45,778.05 is: 63,174.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,585.39 : 112,589.80 = 45,778.05 : x
  2. Step 2: Convert to fraction form
    81,585.39/112,589.80 = 45,778.05/x
  3. Step 3: Cross multiply
    81,585.39x = 112,589.80 × 45,778.05
  4. Step 4: Simplify right side
    81,585.39x = 5,154,141,221.12
  5. Step 5: Solve for x
    x = 5,154,141,221.12/81,585.39
  6. Step 6: Final answer
    x = 63,174.81

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1.5x scale

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.