Home / 75,518.60-104,234.10-45,720.20

Finding the Fourth Proportional to 75,518.60, 104,234.10 and 45,720.20

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Solution

The fourth proportional to 75,518.60, 104,234.10 and 45,720.20 is: 63,105.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,518.60 : 104,234.10 = 45,720.20 : x
  2. Step 2: Convert to fraction form
    75,518.60/104,234.10 = 45,720.20/x
  3. Step 3: Cross multiply
    75,518.60x = 104,234.10 × 45,720.20
  4. Step 4: Simplify right side
    75,518.60x = 4,765,603,898.82
  5. Step 5: Solve for x
    x = 4,765,603,898.82/75,518.60
  6. Step 6: Final answer
    x = 63,105.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.