Home / 42,015.11-57,901.10-30,057.69

Finding the Fourth Proportional to 42,015.11, 57,901.10 and 30,057.69

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Solution

The fourth proportional to 42,015.11, 57,901.10 and 30,057.69 is: 41,422.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,015.11 : 57,901.10 = 30,057.69 : x
  2. Step 2: Convert to fraction form
    42,015.11/57,901.10 = 30,057.69/x
  3. Step 3: Cross multiply
    42,015.11x = 57,901.10 × 30,057.69
  4. Step 4: Simplify right side
    42,015.11x = 1,740,372,874.67
  5. Step 5: Solve for x
    x = 1,740,372,874.67/42,015.11
  6. Step 6: Final answer
    x = 41,422.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.