Home / 78,106.23-107,786.66-42,296.28

Finding the Fourth Proportional to 78,106.23, 107,786.66 and 42,296.28

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Solution

The fourth proportional to 78,106.23, 107,786.66 and 42,296.28 is: 58,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,106.23 : 107,786.66 = 42,296.28 : x
  2. Step 2: Convert to fraction form
    78,106.23/107,786.66 = 42,296.28/x
  3. Step 3: Cross multiply
    78,106.23x = 107,786.66 × 42,296.28
  4. Step 4: Simplify right side
    78,106.23x = 4,558,974,540.14
  5. Step 5: Solve for x
    x = 4,558,974,540.14/78,106.23
  6. Step 6: Final answer
    x = 58,368.90

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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.