Home / 78,112.17-107,794.26-42,301.36

Finding the Fourth Proportional to 78,112.17, 107,794.26 and 42,301.36

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Solution

The fourth proportional to 78,112.17, 107,794.26 and 42,301.36 is: 58,375.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,112.17 : 107,794.26 = 42,301.36 : x
  2. Step 2: Convert to fraction form
    78,112.17/107,794.26 = 42,301.36/x
  3. Step 3: Cross multiply
    78,112.17x = 107,794.26 × 42,301.36
  4. Step 4: Simplify right side
    78,112.17x = 4,559,843,798.19
  5. Step 5: Solve for x
    x = 4,559,843,798.19/78,112.17
  6. Step 6: Final answer
    x = 58,375.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.