Home / 42,820.28-64,230.90-19,129.04

Finding the Fourth Proportional to 42,820.28, 64,230.90 and 19,129.04

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Solution

The fourth proportional to 42,820.28, 64,230.90 and 19,129.04 is: 28,693.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,820.28 : 64,230.90 = 19,129.04 : x
  2. Step 2: Convert to fraction form
    42,820.28/64,230.90 = 19,129.04/x
  3. Step 3: Cross multiply
    42,820.28x = 64,230.90 × 19,129.04
  4. Step 4: Simplify right side
    42,820.28x = 1,228,675,455.34
  5. Step 5: Solve for x
    x = 1,228,675,455.34/42,820.28
  6. Step 6: Final answer
    x = 28,693.77

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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.