Home / 78,272.91-117,358.34-51,538.02

Finding the Fourth Proportional to 78,272.91, 117,358.34 and 51,538.02

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Solution

The fourth proportional to 78,272.91, 117,358.34 and 51,538.02 is: 77,273.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,272.91 : 117,358.34 = 51,538.02 : x
  2. Step 2: Convert to fraction form
    78,272.91/117,358.34 = 51,538.02/x
  3. Step 3: Cross multiply
    78,272.91x = 117,358.34 × 51,538.02
  4. Step 4: Simplify right side
    78,272.91x = 6,048,416,216.40
  5. Step 5: Solve for x
    x = 6,048,416,216.40/78,272.91
  6. Step 6: Final answer
    x = 77,273.43

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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.