Home / 78,333.14-108,312.36-77,067.02

Finding the Fourth Proportional to 78,333.14, 108,312.36 and 77,067.02

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Solution

The fourth proportional to 78,333.14, 108,312.36 and 77,067.02 is: 106,561.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,333.14 : 108,312.36 = 77,067.02 : x
  2. Step 2: Convert to fraction form
    78,333.14/108,312.36 = 77,067.02/x
  3. Step 3: Cross multiply
    78,333.14x = 108,312.36 × 77,067.02
  4. Step 4: Simplify right side
    78,333.14x = 8,347,310,814.37
  5. Step 5: Solve for x
    x = 8,347,310,814.37/78,333.14
  6. Step 6: Final answer
    x = 106,561.68

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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.