Home / 74,429.20-102,712.79-40,437.68

Finding the Fourth Proportional to 74,429.20, 102,712.79 and 40,437.68

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Solution

The fourth proportional to 74,429.20, 102,712.79 and 40,437.68 is: 55,804.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,429.20 : 102,712.79 = 40,437.68 : x
  2. Step 2: Convert to fraction form
    74,429.20/102,712.79 = 40,437.68/x
  3. Step 3: Cross multiply
    74,429.20x = 102,712.79 × 40,437.68
  4. Step 4: Simplify right side
    74,429.20x = 4,153,466,933.93
  5. Step 5: Solve for x
    x = 4,153,466,933.93/74,429.20
  6. Step 6: Final answer
    x = 55,804.27

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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.