Home / 42,755.88-64,147.66-20,566.37

Finding the Fourth Proportional to 42,755.88, 64,147.66 and 20,566.37

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Solution

The fourth proportional to 42,755.88, 64,147.66 and 20,566.37 is: 30,856.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,755.88 : 64,147.66 = 20,566.37 : x
  2. Step 2: Convert to fraction form
    42,755.88/64,147.66 = 20,566.37/x
  3. Step 3: Cross multiply
    42,755.88x = 64,147.66 × 20,566.37
  4. Step 4: Simplify right side
    42,755.88x = 1,319,284,510.19
  5. Step 5: Solve for x
    x = 1,319,284,510.19/42,755.88
  6. Step 6: Final answer
    x = 30,856.21

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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.