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Finding the Fourth Proportional to 74,804.92, 112,151.93 and 45,215.82

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Solution

The fourth proportional to 74,804.92, 112,151.93 and 45,215.82 is: 67,790.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,804.92 : 112,151.93 = 45,215.82 : x
  2. Step 2: Convert to fraction form
    74,804.92/112,151.93 = 45,215.82/x
  3. Step 3: Cross multiply
    74,804.92x = 112,151.93 × 45,215.82
  4. Step 4: Simplify right side
    74,804.92x = 5,071,041,253.45
  5. Step 5: Solve for x
    x = 5,071,041,253.45/74,804.92
  6. Step 6: Final answer
    x = 67,790.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.