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Finding the Fourth Proportional to 72,334.83, 99,830.59 and 40,497.58

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Solution

The fourth proportional to 72,334.83, 99,830.59 and 40,497.58 is: 55,891.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,334.83 : 99,830.59 = 40,497.58 : x
  2. Step 2: Convert to fraction form
    72,334.83/99,830.59 = 40,497.58/x
  3. Step 3: Cross multiply
    72,334.83x = 99,830.59 × 40,497.58
  4. Step 4: Simplify right side
    72,334.83x = 4,042,896,805.82
  5. Step 5: Solve for x
    x = 4,042,896,805.82/72,334.83
  6. Step 6: Final answer
    x = 55,891.43

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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.