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Finding the Fourth Proportional to 72,574.83, 100,153.19 and 40,743.79

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Solution

The fourth proportional to 72,574.83, 100,153.19 and 40,743.79 is: 56,226.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,574.83 : 100,153.19 = 40,743.79 : x
  2. Step 2: Convert to fraction form
    72,574.83/100,153.19 = 40,743.79/x
  3. Step 3: Cross multiply
    72,574.83x = 100,153.19 × 40,743.79
  4. Step 4: Simplify right side
    72,574.83x = 4,080,620,392.67
  5. Step 5: Solve for x
    x = 4,080,620,392.67/72,574.83
  6. Step 6: Final answer
    x = 56,226.39

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.