Home / 42,755.72-64,134.68-20,261.12

Finding the Fourth Proportional to 42,755.72, 64,134.68 and 20,261.12

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Solution

The fourth proportional to 42,755.72, 64,134.68 and 20,261.12 is: 30,392.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,755.72 : 64,134.68 = 20,261.12 : x
  2. Step 2: Convert to fraction form
    42,755.72/64,134.68 = 20,261.12/x
  3. Step 3: Cross multiply
    42,755.72x = 64,134.68 × 20,261.12
  4. Step 4: Simplify right side
    42,755.72x = 1,299,440,025.66
  5. Step 5: Solve for x
    x = 1,299,440,025.66/42,755.72
  6. Step 6: Final answer
    x = 30,392.19

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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.