Home / 78,538.14-117,785.94-53,573.53

Finding the Fourth Proportional to 78,538.14, 117,785.94 and 53,573.53

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Solution

The fourth proportional to 78,538.14, 117,785.94 and 53,573.53 is: 80,345.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,538.14 : 117,785.94 = 53,573.53 : x
  2. Step 2: Convert to fraction form
    78,538.14/117,785.94 = 53,573.53/x
  3. Step 3: Cross multiply
    78,538.14x = 117,785.94 × 53,573.53
  4. Step 4: Simplify right side
    78,538.14x = 6,310,208,590.17
  5. Step 5: Solve for x
    x = 6,310,208,590.17/78,538.14
  6. Step 6: Final answer
    x = 80,345.79

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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.