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Finding the Fourth Proportional to 74,572.90, 102,912.76 and 40,583.58

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Solution

The fourth proportional to 74,572.90, 102,912.76 and 40,583.58 is: 56,006.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,572.90 : 102,912.76 = 40,583.58 : x
  2. Step 2: Convert to fraction form
    74,572.90/102,912.76 = 40,583.58/x
  3. Step 3: Cross multiply
    74,572.90x = 102,912.76 × 40,583.58
  4. Step 4: Simplify right side
    74,572.90x = 4,176,568,228.48
  5. Step 5: Solve for x
    x = 4,176,568,228.48/74,572.90
  6. Step 6: Final answer
    x = 56,006.51

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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.