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Finding the Fourth Proportional to 72,582.60, 100,164.96 and 40,749.60

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Solution

The fourth proportional to 72,582.60, 100,164.96 and 40,749.60 is: 56,234.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,582.60 : 100,164.96 = 40,749.60 : x
  2. Step 2: Convert to fraction form
    72,582.60/100,164.96 = 40,749.60/x
  3. Step 3: Cross multiply
    72,582.60x = 100,164.96 × 40,749.60
  4. Step 4: Simplify right side
    72,582.60x = 4,081,682,054.02
  5. Step 5: Solve for x
    x = 4,081,682,054.02/72,582.60
  6. Step 6: Final answer
    x = 56,234.99

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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.