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Finding the Fourth Proportional to 66,917.84, 100,201.40 and 47,089.04

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Solution

The fourth proportional to 66,917.84, 100,201.40 and 47,089.04 is: 70,510.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,917.84 : 100,201.40 = 47,089.04 : x
  2. Step 2: Convert to fraction form
    66,917.84/100,201.40 = 47,089.04/x
  3. Step 3: Cross multiply
    66,917.84x = 100,201.40 × 47,089.04
  4. Step 4: Simplify right side
    66,917.84x = 4,718,387,732.66
  5. Step 5: Solve for x
    x = 4,718,387,732.66/66,917.84
  6. Step 6: Final answer
    x = 70,510.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.