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Finding the Fourth Proportional to 66,570.48, 99,866.70 and 22,188.96

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Solution

The fourth proportional to 66,570.48, 99,866.70 and 22,188.96 is: 33,287.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,570.48 : 99,866.70 = 22,188.96 : x
  2. Step 2: Convert to fraction form
    66,570.48/99,866.70 = 22,188.96/x
  3. Step 3: Cross multiply
    66,570.48x = 99,866.70 × 22,188.96
  4. Step 4: Simplify right side
    66,570.48x = 2,215,938,211.63
  5. Step 5: Solve for x
    x = 2,215,938,211.63/66,570.48
  6. Step 6: Final answer
    x = 33,287.10

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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.