Home / 76,742.05-115,105.06-20,588.17

Finding the Fourth Proportional to 76,742.05, 115,105.06 and 20,588.17

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Solution

The fourth proportional to 76,742.05, 115,105.06 and 20,588.17 is: 30,880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,742.05 : 115,105.06 = 20,588.17 : x
  2. Step 2: Convert to fraction form
    76,742.05/115,105.06 = 20,588.17/x
  3. Step 3: Cross multiply
    76,742.05x = 115,105.06 × 20,588.17
  4. Step 4: Simplify right side
    76,742.05x = 2,369,802,543.14
  5. Step 5: Solve for x
    x = 2,369,802,543.14/76,742.05
  6. Step 6: Final answer
    x = 30,880.10

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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.