Home / 78,839.93-118,189.56-28,908.36

Finding the Fourth Proportional to 78,839.93, 118,189.56 and 28,908.36

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Solution

The fourth proportional to 78,839.93, 118,189.56 and 28,908.36 is: 43,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,839.93 : 118,189.56 = 28,908.36 : x
  2. Step 2: Convert to fraction form
    78,839.93/118,189.56 = 28,908.36/x
  3. Step 3: Cross multiply
    78,839.93x = 118,189.56 × 28,908.36
  4. Step 4: Simplify right side
    78,839.93x = 3,416,666,457.13
  5. Step 5: Solve for x
    x = 3,416,666,457.13/78,839.93
  6. Step 6: Final answer
    x = 43,336.75

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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.