Home / 66,490.03-91,743.69-39,635.03

Finding the Fourth Proportional to 66,490.03, 91,743.69 and 39,635.03

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Solution

The fourth proportional to 66,490.03, 91,743.69 and 39,635.03 is: 54,688.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,490.03 : 91,743.69 = 39,635.03 : x
  2. Step 2: Convert to fraction form
    66,490.03/91,743.69 = 39,635.03/x
  3. Step 3: Cross multiply
    66,490.03x = 91,743.69 × 39,635.03
  4. Step 4: Simplify right side
    66,490.03x = 3,636,263,905.46
  5. Step 5: Solve for x
    x = 3,636,263,905.46/66,490.03
  6. Step 6: Final answer
    x = 54,688.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.