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Finding the Fourth Proportional to 74,180.42, 110,731.03 and 68,698.34

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Solution

The fourth proportional to 74,180.42, 110,731.03 and 68,698.34 is: 102,547.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,180.42 : 110,731.03 = 68,698.34 : x
  2. Step 2: Convert to fraction form
    74,180.42/110,731.03 = 68,698.34/x
  3. Step 3: Cross multiply
    74,180.42x = 110,731.03 × 68,698.34
  4. Step 4: Simplify right side
    74,180.42x = 7,607,037,604.00
  5. Step 5: Solve for x
    x = 7,607,037,604.00/74,180.42
  6. Step 6: Final answer
    x = 102,547.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.