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Finding the Fourth Proportional to 66,615.78, 99,924.75 and 22,242.72

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Solution

The fourth proportional to 66,615.78, 99,924.75 and 22,242.72 is: 33,364.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,615.78 : 99,924.75 = 22,242.72 : x
  2. Step 2: Convert to fraction form
    66,615.78/99,924.75 = 22,242.72/x
  3. Step 3: Cross multiply
    66,615.78x = 99,924.75 × 22,242.72
  4. Step 4: Simplify right side
    66,615.78x = 2,222,598,235.32
  5. Step 5: Solve for x
    x = 2,222,598,235.32/66,615.78
  6. Step 6: Final answer
    x = 33,364.44

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1.5x scale

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.