Home / 42,775.75-64,189.55-18,151.75

Finding the Fourth Proportional to 42,775.75, 64,189.55 and 18,151.75

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Solution

The fourth proportional to 42,775.75, 64,189.55 and 18,151.75 is: 27,238.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,775.75 : 64,189.55 = 18,151.75 : x
  2. Step 2: Convert to fraction form
    42,775.75/64,189.55 = 18,151.75/x
  3. Step 3: Cross multiply
    42,775.75x = 64,189.55 × 18,151.75
  4. Step 4: Simplify right side
    42,775.75x = 1,165,152,664.21
  5. Step 5: Solve for x
    x = 1,165,152,664.21/42,775.75
  6. Step 6: Final answer
    x = 27,238.63

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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.