Home / 66,228.20-99,342.30-61,821.80

Finding the Fourth Proportional to 66,228.20, 99,342.30 and 61,821.80

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Solution

The fourth proportional to 66,228.20, 99,342.30 and 61,821.80 is: 92,732.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,228.20 : 99,342.30 = 61,821.80 : x
  2. Step 2: Convert to fraction form
    66,228.20/99,342.30 = 61,821.80/x
  3. Step 3: Cross multiply
    66,228.20x = 99,342.30 × 61,821.80
  4. Step 4: Simplify right side
    66,228.20x = 6,141,519,802.14
  5. Step 5: Solve for x
    x = 6,141,519,802.14/66,228.20
  6. Step 6: Final answer
    x = 92,732.70

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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.