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Finding the Fourth Proportional to 66,804.30, 100,206.45 and 61,361.10

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Solution

The fourth proportional to 66,804.30, 100,206.45 and 61,361.10 is: 92,041.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,804.30 : 100,206.45 = 61,361.10 : x
  2. Step 2: Convert to fraction form
    66,804.30/100,206.45 = 61,361.10/x
  3. Step 3: Cross multiply
    66,804.30x = 100,206.45 × 61,361.10
  4. Step 4: Simplify right side
    66,804.30x = 6,148,777,999.10
  5. Step 5: Solve for x
    x = 6,148,777,999.10/66,804.30
  6. Step 6: Final answer
    x = 92,041.65

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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.