Home / 78,918.44-118,336.17-53,965.63

Finding the Fourth Proportional to 78,918.44, 118,336.17 and 53,965.63

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Solution

The fourth proportional to 78,918.44, 118,336.17 and 53,965.63 is: 80,920.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918.44 : 118,336.17 = 53,965.63 : x
  2. Step 2: Convert to fraction form
    78,918.44/118,336.17 = 53,965.63/x
  3. Step 3: Cross multiply
    78,918.44x = 118,336.17 × 53,965.63
  4. Step 4: Simplify right side
    78,918.44x = 6,386,085,965.84
  5. Step 5: Solve for x
    x = 6,386,085,965.84/78,918.44
  6. Step 6: Final answer
    x = 80,920.07

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1.5x scale

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.