Home / 78,694.79-118,055.26-31,310.33

Finding the Fourth Proportional to 78,694.79, 118,055.26 and 31,310.33

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Solution

The fourth proportional to 78,694.79, 118,055.26 and 31,310.33 is: 46,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,694.79 : 118,055.26 = 31,310.33 : x
  2. Step 2: Convert to fraction form
    78,694.79/118,055.26 = 31,310.33/x
  3. Step 3: Cross multiply
    78,694.79x = 118,055.26 × 31,310.33
  4. Step 4: Simplify right side
    78,694.79x = 3,696,349,148.84
  5. Step 5: Solve for x
    x = 3,696,349,148.84/78,694.79
  6. Step 6: Final answer
    x = 46,970.70

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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.