Home / 72,140.96-99,552.62-40,310.12

Finding the Fourth Proportional to 72,140.96, 99,552.62 and 40,310.12

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Solution

The fourth proportional to 72,140.96, 99,552.62 and 40,310.12 is: 55,626.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,140.96 : 99,552.62 = 40,310.12 : x
  2. Step 2: Convert to fraction form
    72,140.96/99,552.62 = 40,310.12/x
  3. Step 3: Cross multiply
    72,140.96x = 99,552.62 × 40,310.12
  4. Step 4: Simplify right side
    72,140.96x = 4,012,977,856.96
  5. Step 5: Solve for x
    x = 4,012,977,856.96/72,140.96
  6. Step 6: Final answer
    x = 55,626.90

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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.