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Finding the Fourth Proportional to 66,878.98, 100,328.19 and 35,697.22

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Solution

The fourth proportional to 66,878.98, 100,328.19 and 35,697.22 is: 53,551.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,878.98 : 100,328.19 = 35,697.22 : x
  2. Step 2: Convert to fraction form
    66,878.98/100,328.19 = 35,697.22/x
  3. Step 3: Cross multiply
    66,878.98x = 100,328.19 × 35,697.22
  4. Step 4: Simplify right side
    66,878.98x = 3,581,437,470.63
  5. Step 5: Solve for x
    x = 3,581,437,470.63/66,878.98
  6. Step 6: Final answer
    x = 53,551.02

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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.