Home / 42,869.48-64,345.68-20,698.43

Finding the Fourth Proportional to 42,869.48, 64,345.68 and 20,698.43

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Solution

The fourth proportional to 42,869.48, 64,345.68 and 20,698.43 is: 31,067.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,869.48 : 64,345.68 = 20,698.43 : x
  2. Step 2: Convert to fraction form
    42,869.48/64,345.68 = 20,698.43/x
  3. Step 3: Cross multiply
    42,869.48x = 64,345.68 × 20,698.43
  4. Step 4: Simplify right side
    42,869.48x = 1,331,854,231.55
  5. Step 5: Solve for x
    x = 1,331,854,231.55/42,869.48
  6. Step 6: Final answer
    x = 31,067.66

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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.