Home / 53,712.21-80,568.35-20,424.59

Finding the Fourth Proportional to 53,712.21, 80,568.35 and 20,424.59

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Solution

The fourth proportional to 53,712.21, 80,568.35 and 20,424.59 is: 30,636.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,712.21 : 80,568.35 = 20,424.59 : x
  2. Step 2: Convert to fraction form
    53,712.21/80,568.35 = 20,424.59/x
  3. Step 3: Cross multiply
    53,712.21x = 80,568.35 × 20,424.59
  4. Step 4: Simplify right side
    53,712.21x = 1,645,575,010.76
  5. Step 5: Solve for x
    x = 1,645,575,010.76/53,712.21
  6. Step 6: Final answer
    x = 30,636.89

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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.