Home / 43,135.57-64,656.98-20,899.86

Finding the Fourth Proportional to 43,135.57, 64,656.98 and 20,899.86

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Solution

The fourth proportional to 43,135.57, 64,656.98 and 20,899.86 is: 31,327.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,135.57 : 64,656.98 = 20,899.86 : x
  2. Step 2: Convert to fraction form
    43,135.57/64,656.98 = 20,899.86/x
  3. Step 3: Cross multiply
    43,135.57x = 64,656.98 × 20,899.86
  4. Step 4: Simplify right side
    43,135.57x = 1,351,321,830.02
  5. Step 5: Solve for x
    x = 1,351,321,830.02/43,135.57
  6. Step 6: Final answer
    x = 31,327.32

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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.