Home / 78,712.94-118,091.37-34,343.66

Finding the Fourth Proportional to 78,712.94, 118,091.37 and 34,343.66

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Solution

The fourth proportional to 78,712.94, 118,091.37 and 34,343.66 is: 51,525.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,712.94 : 118,091.37 = 34,343.66 : x
  2. Step 2: Convert to fraction form
    78,712.94/118,091.37 = 34,343.66/x
  3. Step 3: Cross multiply
    78,712.94x = 118,091.37 × 34,343.66
  4. Step 4: Simplify right side
    78,712.94x = 4,055,689,860.21
  5. Step 5: Solve for x
    x = 4,055,689,860.21/78,712.94
  6. Step 6: Final answer
    x = 51,525.07

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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.