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Finding the Fourth Proportional to 74,299.45, 102,531.24 and 45,216.91

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Solution

The fourth proportional to 74,299.45, 102,531.24 and 45,216.91 is: 62,398.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,299.45 : 102,531.24 = 45,216.91 : x
  2. Step 2: Convert to fraction form
    74,299.45/102,531.24 = 45,216.91/x
  3. Step 3: Cross multiply
    74,299.45x = 102,531.24 × 45,216.91
  4. Step 4: Simplify right side
    74,299.45x = 4,636,145,851.27
  5. Step 5: Solve for x
    x = 4,636,145,851.27/74,299.45
  6. Step 6: Final answer
    x = 62,398.12

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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.