Home / 74,158.61-102,339.05-40,166.96

Finding the Fourth Proportional to 74,158.61, 102,339.05 and 40,166.96

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Solution

The fourth proportional to 74,158.61, 102,339.05 and 40,166.96 is: 55,430.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,158.61 : 102,339.05 = 40,166.96 : x
  2. Step 2: Convert to fraction form
    74,158.61/102,339.05 = 40,166.96/x
  3. Step 3: Cross multiply
    74,158.61x = 102,339.05 × 40,166.96
  4. Step 4: Simplify right side
    74,158.61x = 4,110,647,815.26
  5. Step 5: Solve for x
    x = 4,110,647,815.26/74,158.61
  6. Step 6: Final answer
    x = 55,430.49

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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.