Home / 42,755.97-64,135.05-20,261.37

Finding the Fourth Proportional to 42,755.97, 64,135.05 and 20,261.37

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Solution

The fourth proportional to 42,755.97, 64,135.05 and 20,261.37 is: 30,392.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,755.97 : 64,135.05 = 20,261.37 : x
  2. Step 2: Convert to fraction form
    42,755.97/64,135.05 = 20,261.37/x
  3. Step 3: Cross multiply
    42,755.97x = 64,135.05 × 20,261.37
  4. Step 4: Simplify right side
    42,755.97x = 1,299,463,978.02
  5. Step 5: Solve for x
    x = 1,299,463,978.02/42,755.97
  6. Step 6: Final answer
    x = 30,392.57

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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.