Home / 78,672.37-117,996.30-43,151.16

Finding the Fourth Proportional to 78,672.37, 117,996.30 and 43,151.16

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Solution

The fourth proportional to 78,672.37, 117,996.30 and 43,151.16 is: 64,720.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,672.37 : 117,996.30 = 43,151.16 : x
  2. Step 2: Convert to fraction form
    78,672.37/117,996.30 = 43,151.16/x
  3. Step 3: Cross multiply
    78,672.37x = 117,996.30 × 43,151.16
  4. Step 4: Simplify right side
    78,672.37x = 5,091,677,663.19
  5. Step 5: Solve for x
    x = 5,091,677,663.19/78,672.37
  6. Step 6: Final answer
    x = 64,720.02

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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.