Home / 75,320.05-112,980.72-19,160.21

Finding the Fourth Proportional to 75,320.05, 112,980.72 and 19,160.21

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Solution

The fourth proportional to 75,320.05, 112,980.72 and 19,160.21 is: 28,740.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,320.05 : 112,980.72 = 19,160.21 : x
  2. Step 2: Convert to fraction form
    75,320.05/112,980.72 = 19,160.21/x
  3. Step 3: Cross multiply
    75,320.05x = 112,980.72 × 19,160.21
  4. Step 4: Simplify right side
    75,320.05x = 2,164,734,321.15
  5. Step 5: Solve for x
    x = 2,164,734,321.15/75,320.05
  6. Step 6: Final answer
    x = 28,740.48

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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.