Home / 78,084.77-107,757.05-42,274.80

Finding the Fourth Proportional to 78,084.77, 107,757.05 and 42,274.80

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Solution

The fourth proportional to 78,084.77, 107,757.05 and 42,274.80 is: 58,339.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,084.77 : 107,757.05 = 42,274.80 : x
  2. Step 2: Convert to fraction form
    78,084.77/107,757.05 = 42,274.80/x
  3. Step 3: Cross multiply
    78,084.77x = 107,757.05 × 42,274.80
  4. Step 4: Simplify right side
    78,084.77x = 4,555,407,525.97
  5. Step 5: Solve for x
    x = 4,555,407,525.97/78,084.77
  6. Step 6: Final answer
    x = 58,339.26

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1.5x scale

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.