Home / 78,708.94-118,085.37-34,339.66

Finding the Fourth Proportional to 78,708.94, 118,085.37 and 34,339.66

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Solution

The fourth proportional to 78,708.94, 118,085.37 and 34,339.66 is: 51,519.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,708.94 : 118,085.37 = 34,339.66 : x
  2. Step 2: Convert to fraction form
    78,708.94/118,085.37 = 34,339.66/x
  3. Step 3: Cross multiply
    78,708.94x = 118,085.37 × 34,339.66
  4. Step 4: Simplify right side
    78,708.94x = 4,055,011,456.77
  5. Step 5: Solve for x
    x = 4,055,011,456.77/78,708.94
  6. Step 6: Final answer
    x = 51,519.07

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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.