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Finding the Fourth Proportional to 72,292.98, 99,764.82 and 40,464.84

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Solution

The fourth proportional to 72,292.98, 99,764.82 and 40,464.84 is: 55,841.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,292.98 : 99,764.82 = 40,464.84 : x
  2. Step 2: Convert to fraction form
    72,292.98/99,764.82 = 40,464.84/x
  3. Step 3: Cross multiply
    72,292.98x = 99,764.82 × 40,464.84
  4. Step 4: Simplify right side
    72,292.98x = 4,036,967,478.93
  5. Step 5: Solve for x
    x = 4,036,967,478.93/72,292.98
  6. Step 6: Final answer
    x = 55,841.76

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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.