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Finding the Fourth Proportional to 72,362.17, 99,804.94 and 63,394.12

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Solution

The fourth proportional to 72,362.17, 99,804.94 and 63,394.12 is: 87,435.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,362.17 : 99,804.94 = 63,394.12 : x
  2. Step 2: Convert to fraction form
    72,362.17/99,804.94 = 63,394.12/x
  3. Step 3: Cross multiply
    72,362.17x = 99,804.94 × 63,394.12
  4. Step 4: Simplify right side
    72,362.17x = 6,327,046,342.95
  5. Step 5: Solve for x
    x = 6,327,046,342.95/72,362.17
  6. Step 6: Final answer
    x = 87,435.83

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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.