Home / 53,076.18-79,645.30-19,819.20

Finding the Fourth Proportional to 53,076.18, 79,645.30 and 19,819.20

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Solution

The fourth proportional to 53,076.18, 79,645.30 and 19,819.20 is: 29,740.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,076.18 : 79,645.30 = 19,819.20 : x
  2. Step 2: Convert to fraction form
    53,076.18/79,645.30 = 19,819.20/x
  3. Step 3: Cross multiply
    53,076.18x = 79,645.30 × 19,819.20
  4. Step 4: Simplify right side
    53,076.18x = 1,578,506,129.76
  5. Step 5: Solve for x
    x = 1,578,506,129.76/53,076.18
  6. Step 6: Final answer
    x = 29,740.39

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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.