Home / 78,455.07-117,645.63-28,499.94

Finding the Fourth Proportional to 78,455.07, 117,645.63 and 28,499.94

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Solution

The fourth proportional to 78,455.07, 117,645.63 and 28,499.94 is: 42,736.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,455.07 : 117,645.63 = 28,499.94 : x
  2. Step 2: Convert to fraction form
    78,455.07/117,645.63 = 28,499.94/x
  3. Step 3: Cross multiply
    78,455.07x = 117,645.63 × 28,499.94
  4. Step 4: Simplify right side
    78,455.07x = 3,352,893,396.26
  5. Step 5: Solve for x
    x = 3,352,893,396.26/78,455.07
  6. Step 6: Final answer
    x = 42,736.48

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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.