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Finding the Fourth Proportional to 74,354.92, 102,607.50 and 40,361.80

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Solution

The fourth proportional to 74,354.92, 102,607.50 and 40,361.80 is: 55,698.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,354.92 : 102,607.50 = 40,361.80 : x
  2. Step 2: Convert to fraction form
    74,354.92/102,607.50 = 40,361.80/x
  3. Step 3: Cross multiply
    74,354.92x = 102,607.50 × 40,361.80
  4. Step 4: Simplify right side
    74,354.92x = 4,141,423,393.50
  5. Step 5: Solve for x
    x = 4,141,423,393.50/74,354.92
  6. Step 6: Final answer
    x = 55,698.04

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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.