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Finding the Fourth Proportional to 74,522.88, 102,843.52 and 40,989.76

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Solution

The fourth proportional to 74,522.88, 102,843.52 and 40,989.76 is: 56,566.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,522.88 : 102,843.52 = 40,989.76 : x
  2. Step 2: Convert to fraction form
    74,522.88/102,843.52 = 40,989.76/x
  3. Step 3: Cross multiply
    74,522.88x = 102,843.52 × 40,989.76
  4. Step 4: Simplify right side
    74,522.88x = 4,215,531,202.36
  5. Step 5: Solve for x
    x = 4,215,531,202.36/74,522.88
  6. Step 6: Final answer
    x = 56,566.94

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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.