Home / 78,836.99-118,185.16-28,905.43

Finding the Fourth Proportional to 78,836.99, 118,185.16 and 28,905.43

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Solution

The fourth proportional to 78,836.99, 118,185.16 and 28,905.43 is: 43,332.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,836.99 : 118,185.16 = 28,905.43 : x
  2. Step 2: Convert to fraction form
    78,836.99/118,185.16 = 28,905.43/x
  3. Step 3: Cross multiply
    78,836.99x = 118,185.16 × 28,905.43
  4. Step 4: Simplify right side
    78,836.99x = 3,416,192,869.42
  5. Step 5: Solve for x
    x = 3,416,192,869.42/78,836.99
  6. Step 6: Final answer
    x = 43,332.36

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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.