Home / 74,137.13-102,309.45-40,146.02

Finding the Fourth Proportional to 74,137.13, 102,309.45 and 40,146.02

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Solution

The fourth proportional to 74,137.13, 102,309.45 and 40,146.02 is: 55,401.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,137.13 : 102,309.45 = 40,146.02 : x
  2. Step 2: Convert to fraction form
    74,137.13/102,309.45 = 40,146.02/x
  3. Step 3: Cross multiply
    74,137.13x = 102,309.45 × 40,146.02
  4. Step 4: Simplify right side
    74,137.13x = 4,107,317,225.89
  5. Step 5: Solve for x
    x = 4,107,317,225.89/74,137.13
  6. Step 6: Final answer
    x = 55,401.62

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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.