Home / 74,620.47-102,972.80-40,628.85

Finding the Fourth Proportional to 74,620.47, 102,972.80 and 40,628.85

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Solution

The fourth proportional to 74,620.47, 102,972.80 and 40,628.85 is: 56,065.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,620.47 : 102,972.80 = 40,628.85 : x
  2. Step 2: Convert to fraction form
    74,620.47/102,972.80 = 40,628.85/x
  3. Step 3: Cross multiply
    74,620.47x = 102,972.80 × 40,628.85
  4. Step 4: Simplify right side
    74,620.47x = 4,183,666,739.93
  5. Step 5: Solve for x
    x = 4,183,666,739.93/74,620.47
  6. Step 6: Final answer
    x = 56,065.94

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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.