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Finding the Fourth Proportional to 66,407.80, 99,607.36 and 26,968.36

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Solution

The fourth proportional to 66,407.80, 99,607.36 and 26,968.36 is: 40,450.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,407.80 : 99,607.36 = 26,968.36 : x
  2. Step 2: Convert to fraction form
    66,407.80/99,607.36 = 26,968.36/x
  3. Step 3: Cross multiply
    66,407.80x = 99,607.36 × 26,968.36
  4. Step 4: Simplify right side
    66,407.80x = 2,686,247,143.13
  5. Step 5: Solve for x
    x = 2,686,247,143.13/66,407.80
  6. Step 6: Final answer
    x = 40,450.78

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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.