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Finding the Fourth Proportional to 64,879.20, 97,203.60 and 40,226.40

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Solution

The fourth proportional to 64,879.20, 97,203.60 and 40,226.40 is: 60,268.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,879.20 : 97,203.60 = 40,226.40 : x
  2. Step 2: Convert to fraction form
    64,879.20/97,203.60 = 40,226.40/x
  3. Step 3: Cross multiply
    64,879.20x = 97,203.60 × 40,226.40
  4. Step 4: Simplify right side
    64,879.20x = 3,910,150,895.04
  5. Step 5: Solve for x
    x = 3,910,150,895.04/64,879.20
  6. Step 6: Final answer
    x = 60,268.17

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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.