Home / 81,120.18-121,684.59-24,998.84

Finding the Fourth Proportional to 81,120.18, 121,684.59 and 24,998.84

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Solution

The fourth proportional to 81,120.18, 121,684.59 and 24,998.84 is: 37,499.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,120.18 : 121,684.59 = 24,998.84 : x
  2. Step 2: Convert to fraction form
    81,120.18/121,684.59 = 24,998.84/x
  3. Step 3: Cross multiply
    81,120.18x = 121,684.59 × 24,998.84
  4. Step 4: Simplify right side
    81,120.18x = 3,041,972,987.45
  5. Step 5: Solve for x
    x = 3,041,972,987.45/81,120.18
  6. Step 6: Final answer
    x = 37,499.58

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Half scale
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Double scale
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Similar ratio
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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.