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Finding the Fourth Proportional to 74,575.50, 102,912.51 and 40,584.09

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Solution

The fourth proportional to 74,575.50, 102,912.51 and 40,584.09 is: 56,005.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,575.50 : 102,912.51 = 40,584.09 : x
  2. Step 2: Convert to fraction form
    74,575.50/102,912.51 = 40,584.09/x
  3. Step 3: Cross multiply
    74,575.50x = 102,912.51 × 40,584.09
  4. Step 4: Simplify right side
    74,575.50x = 4,176,610,567.97
  5. Step 5: Solve for x
    x = 4,176,610,567.97/74,575.50
  6. Step 6: Final answer
    x = 56,005.13

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1.5x scale

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.