Home / 76,145.28-114,204.16-20,728.32

Finding the Fourth Proportional to 76,145.28, 114,204.16 and 20,728.32

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Solution

The fourth proportional to 76,145.28, 114,204.16 and 20,728.32 is: 31,088.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,145.28 : 114,204.16 = 20,728.32 : x
  2. Step 2: Convert to fraction form
    76,145.28/114,204.16 = 20,728.32/x
  3. Step 3: Cross multiply
    76,145.28x = 114,204.16 × 20,728.32
  4. Step 4: Simplify right side
    76,145.28x = 2,367,260,373.81
  5. Step 5: Solve for x
    x = 2,367,260,373.81/76,145.28
  6. Step 6: Final answer
    x = 31,088.73

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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.