Home / 78,112.50-107,847.09-48,356.34

Finding the Fourth Proportional to 78,112.50, 107,847.09 and 48,356.34

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Solution

The fourth proportional to 78,112.50, 107,847.09 and 48,356.34 is: 66,763.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,112.50 : 107,847.09 = 48,356.34 : x
  2. Step 2: Convert to fraction form
    78,112.50/107,847.09 = 48,356.34/x
  3. Step 3: Cross multiply
    78,112.50x = 107,847.09 × 48,356.34
  4. Step 4: Simplify right side
    78,112.50x = 5,215,090,552.05
  5. Step 5: Solve for x
    x = 5,215,090,552.05/78,112.50
  6. Step 6: Final answer
    x = 66,763.84

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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.