Home / 42,819.20-64,223.13-19,440.26

Finding the Fourth Proportional to 42,819.20, 64,223.13 and 19,440.26

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Solution

The fourth proportional to 42,819.20, 64,223.13 and 19,440.26 is: 29,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,819.20 : 64,223.13 = 19,440.26 : x
  2. Step 2: Convert to fraction form
    42,819.20/64,223.13 = 19,440.26/x
  3. Step 3: Cross multiply
    42,819.20x = 64,223.13 × 19,440.26
  4. Step 4: Simplify right side
    42,819.20x = 1,248,514,345.21
  5. Step 5: Solve for x
    x = 1,248,514,345.21/42,819.20
  6. Step 6: Final answer
    x = 29,157.82

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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.