Home / 42,820.53-64,244.78-19,125.20

Finding the Fourth Proportional to 42,820.53, 64,244.78 and 19,125.20

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Solution

The fourth proportional to 42,820.53, 64,244.78 and 19,125.20 is: 28,694.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,820.53 : 64,244.78 = 19,125.20 : x
  2. Step 2: Convert to fraction form
    42,820.53/64,244.78 = 19,125.20/x
  3. Step 3: Cross multiply
    42,820.53x = 64,244.78 × 19,125.20
  4. Step 4: Simplify right side
    42,820.53x = 1,228,693,849.61
  5. Step 5: Solve for x
    x = 1,228,693,849.61/42,820.53
  6. Step 6: Final answer
    x = 28,694.04

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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.