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Finding the Fourth Proportional to 66,981.79, 100,475.77 and 22,608.94

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Solution

The fourth proportional to 66,981.79, 100,475.77 and 22,608.94 is: 33,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,981.79 : 100,475.77 = 22,608.94 : x
  2. Step 2: Convert to fraction form
    66,981.79/100,475.77 = 22,608.94/x
  3. Step 3: Cross multiply
    66,981.79x = 100,475.77 × 22,608.94
  4. Step 4: Simplify right side
    66,981.79x = 2,271,650,655.38
  5. Step 5: Solve for x
    x = 2,271,650,655.38/66,981.79
  6. Step 6: Final answer
    x = 33,914.45

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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.