Home / 53,165.20-79,747.80-45,000.40

Finding the Fourth Proportional to 53,165.20, 79,747.80 and 45,000.40

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Solution

The fourth proportional to 53,165.20, 79,747.80 and 45,000.40 is: 67,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,165.20 : 79,747.80 = 45,000.40 : x
  2. Step 2: Convert to fraction form
    53,165.20/79,747.80 = 45,000.40/x
  3. Step 3: Cross multiply
    53,165.20x = 79,747.80 × 45,000.40
  4. Step 4: Simplify right side
    53,165.20x = 3,588,682,899.12
  5. Step 5: Solve for x
    x = 3,588,682,899.12/53,165.20
  6. Step 6: Final answer
    x = 67,500.60

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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.