Home / 72,022.86-99,379.65-40,191.68

Finding the Fourth Proportional to 72,022.86, 99,379.65 and 40,191.68

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Solution

The fourth proportional to 72,022.86, 99,379.65 and 40,191.68 is: 55,457.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,022.86 : 99,379.65 = 40,191.68 : x
  2. Step 2: Convert to fraction form
    72,022.86/99,379.65 = 40,191.68/x
  3. Step 3: Cross multiply
    72,022.86x = 99,379.65 × 40,191.68
  4. Step 4: Simplify right side
    72,022.86x = 3,994,234,594.41
  5. Step 5: Solve for x
    x = 3,994,234,594.41/72,022.86
  6. Step 6: Final answer
    x = 55,457.87

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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.