Home / 85,619.45-118,141.03-53,765.80

Finding the Fourth Proportional to 85,619.45, 118,141.03 and 53,765.80

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Solution

The fourth proportional to 85,619.45, 118,141.03 and 53,765.80 is: 74,188.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,619.45 : 118,141.03 = 53,765.80 : x
  2. Step 2: Convert to fraction form
    85,619.45/118,141.03 = 53,765.80/x
  3. Step 3: Cross multiply
    85,619.45x = 118,141.03 × 53,765.80
  4. Step 4: Simplify right side
    85,619.45x = 6,351,946,990.77
  5. Step 5: Solve for x
    x = 6,351,946,990.77/85,619.45
  6. Step 6: Final answer
    x = 74,188.13

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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.