Home / 72,724.16-109,088.68-20,129.24

Finding the Fourth Proportional to 72,724.16, 109,088.68 and 20,129.24

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Solution

The fourth proportional to 72,724.16, 109,088.68 and 20,129.24 is: 30,194.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,724.16 : 109,088.68 = 20,129.24 : x
  2. Step 2: Convert to fraction form
    72,724.16/109,088.68 = 20,129.24/x
  3. Step 3: Cross multiply
    72,724.16x = 109,088.68 × 20,129.24
  4. Step 4: Simplify right side
    72,724.16x = 2,195,872,221.00
  5. Step 5: Solve for x
    x = 2,195,872,221.00/72,724.16
  6. Step 6: Final answer
    x = 30,194.54

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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.