Home / 78,092.66-117,187.19-30,699.45

Finding the Fourth Proportional to 78,092.66, 117,187.19 and 30,699.45

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Solution

The fourth proportional to 78,092.66, 117,187.19 and 30,699.45 is: 46,068.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,092.66 : 117,187.19 = 30,699.45 : x
  2. Step 2: Convert to fraction form
    78,092.66/117,187.19 = 30,699.45/x
  3. Step 3: Cross multiply
    78,092.66x = 117,187.19 × 30,699.45
  4. Step 4: Simplify right side
    78,092.66x = 3,597,582,126.55
  5. Step 5: Solve for x
    x = 3,597,582,126.55/78,092.66
  6. Step 6: Final answer
    x = 46,068.12

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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.