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Finding the Fourth Proportional to 66,670.40, 99,955.92 and 22,270.88

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Solution

The fourth proportional to 66,670.40, 99,955.92 and 22,270.88 is: 33,389.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,670.40 : 99,955.92 = 22,270.88 : x
  2. Step 2: Convert to fraction form
    66,670.40/99,955.92 = 22,270.88/x
  3. Step 3: Cross multiply
    66,670.40x = 99,955.92 × 22,270.88
  4. Step 4: Simplify right side
    66,670.40x = 2,226,106,299.61
  5. Step 5: Solve for x
    x = 2,226,106,299.61/66,670.40
  6. Step 6: Final answer
    x = 33,389.72

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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.