Home / 53,119.80-79,679.70-15,680.39

Finding the Fourth Proportional to 53,119.80, 79,679.70 and 15,680.39

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Solution

The fourth proportional to 53,119.80, 79,679.70 and 15,680.39 is: 23,520.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,119.80 : 79,679.70 = 15,680.39 : x
  2. Step 2: Convert to fraction form
    53,119.80/79,679.70 = 15,680.39/x
  3. Step 3: Cross multiply
    53,119.80x = 79,679.70 × 15,680.39
  4. Step 4: Simplify right side
    53,119.80x = 1,249,408,372.68
  5. Step 5: Solve for x
    x = 1,249,408,372.68/53,119.80
  6. Step 6: Final answer
    x = 23,520.58

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Double scale
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Similar ratio
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1.5x scale

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.