Home / 77,678.31-116,266.87-40,186.75

Finding the Fourth Proportional to 77,678.31, 116,266.87 and 40,186.75

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Solution

The fourth proportional to 77,678.31, 116,266.87 and 40,186.75 is: 60,150.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,678.31 : 116,266.87 = 40,186.75 : x
  2. Step 2: Convert to fraction form
    77,678.31/116,266.87 = 40,186.75/x
  3. Step 3: Cross multiply
    77,678.31x = 116,266.87 × 40,186.75
  4. Step 4: Simplify right side
    77,678.31x = 4,672,387,537.51
  5. Step 5: Solve for x
    x = 4,672,387,537.51/77,678.31
  6. Step 6: Final answer
    x = 60,150.48

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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.