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Finding the Fourth Proportional to 73,950.78, 102,052.08 and 40,416.78

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Solution

The fourth proportional to 73,950.78, 102,052.08 and 40,416.78 is: 55,775.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,950.78 : 102,052.08 = 40,416.78 : x
  2. Step 2: Convert to fraction form
    73,950.78/102,052.08 = 40,416.78/x
  3. Step 3: Cross multiply
    73,950.78x = 102,052.08 × 40,416.78
  4. Step 4: Simplify right side
    73,950.78x = 4,124,616,465.90
  5. Step 5: Solve for x
    x = 4,124,616,465.90/73,950.78
  6. Step 6: Final answer
    x = 55,775.16

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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.