Home / 80,985.60-111,760.32-45,174.68

Finding the Fourth Proportional to 80,985.60, 111,760.32 and 45,174.68

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Solution

The fourth proportional to 80,985.60, 111,760.32 and 45,174.68 is: 62,341.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,985.60 : 111,760.32 = 45,174.68 : x
  2. Step 2: Convert to fraction form
    80,985.60/111,760.32 = 45,174.68/x
  3. Step 3: Cross multiply
    80,985.60x = 111,760.32 × 45,174.68
  4. Step 4: Simplify right side
    80,985.60x = 5,048,736,692.70
  5. Step 5: Solve for x
    x = 5,048,736,692.70/80,985.60
  6. Step 6: Final answer
    x = 62,341.17

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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.