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Finding the Fourth Proportional to 75,119.77, 112,672.32 and 19,715.77

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Solution

The fourth proportional to 75,119.77, 112,672.32 and 19,715.77 is: 29,571.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,119.77 : 112,672.32 = 19,715.77 : x
  2. Step 2: Convert to fraction form
    75,119.77/112,672.32 = 19,715.77/x
  3. Step 3: Cross multiply
    75,119.77x = 112,672.32 × 19,715.77
  4. Step 4: Simplify right side
    75,119.77x = 2,221,421,546.49
  5. Step 5: Solve for x
    x = 2,221,421,546.49/75,119.77
  6. Step 6: Final answer
    x = 29,571.73

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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.