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Finding the Fourth Proportional to 72,637.59, 100,234.49 and 40,811.79

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Solution

The fourth proportional to 72,637.59, 100,234.49 and 40,811.79 is: 56,317.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,637.59 : 100,234.49 = 40,811.79 : x
  2. Step 2: Convert to fraction form
    72,637.59/100,234.49 = 40,811.79/x
  3. Step 3: Cross multiply
    72,637.59x = 100,234.49 × 40,811.79
  4. Step 4: Simplify right side
    72,637.59x = 4,090,748,752.58
  5. Step 5: Solve for x
    x = 4,090,748,752.58/72,637.59
  6. Step 6: Final answer
    x = 56,317.24

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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.