Home / 78,316.88-117,495.36-25,726.82

Finding the Fourth Proportional to 78,316.88, 117,495.36 and 25,726.82

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Solution

The fourth proportional to 78,316.88, 117,495.36 and 25,726.82 is: 38,596.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,316.88 : 117,495.36 = 25,726.82 : x
  2. Step 2: Convert to fraction form
    78,316.88/117,495.36 = 25,726.82/x
  3. Step 3: Cross multiply
    78,316.88x = 117,495.36 × 25,726.82
  4. Step 4: Simplify right side
    78,316.88x = 3,022,781,390.08
  5. Step 5: Solve for x
    x = 3,022,781,390.08/78,316.88
  6. Step 6: Final answer
    x = 38,596.81

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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.