Home / 42,829.70-64,207.59-20,612.51

Finding the Fourth Proportional to 42,829.70, 64,207.59 and 20,612.51

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Solution

The fourth proportional to 42,829.70, 64,207.59 and 20,612.51 is: 30,900.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,829.70 : 64,207.59 = 20,612.51 : x
  2. Step 2: Convert to fraction form
    42,829.70/64,207.59 = 20,612.51/x
  3. Step 3: Cross multiply
    42,829.70x = 64,207.59 × 20,612.51
  4. Step 4: Simplify right side
    42,829.70x = 1,323,479,269.91
  5. Step 5: Solve for x
    x = 1,323,479,269.91/42,829.70
  6. Step 6: Final answer
    x = 30,900.97

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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.