Home / 42,822.46-64,234.16-19,131.21

Finding the Fourth Proportional to 42,822.46, 64,234.16 and 19,131.21

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Solution

The fourth proportional to 42,822.46, 64,234.16 and 19,131.21 is: 28,697.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,822.46 : 64,234.16 = 19,131.21 : x
  2. Step 2: Convert to fraction form
    42,822.46/64,234.16 = 19,131.21/x
  3. Step 3: Cross multiply
    42,822.46x = 64,234.16 × 19,131.21
  4. Step 4: Simplify right side
    42,822.46x = 1,228,877,204.13
  5. Step 5: Solve for x
    x = 1,228,877,204.13/42,822.46
  6. Step 6: Final answer
    x = 28,697.02

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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.