Home / 78,816.76-108,783.32-48,195.09

Finding the Fourth Proportional to 78,816.76, 108,783.32 and 48,195.09

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Solution

The fourth proportional to 78,816.76, 108,783.32 and 48,195.09 is: 66,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,816.76 : 108,783.32 = 48,195.09 : x
  2. Step 2: Convert to fraction form
    78,816.76/108,783.32 = 48,195.09/x
  3. Step 3: Cross multiply
    78,816.76x = 108,783.32 × 48,195.09
  4. Step 4: Simplify right side
    78,816.76x = 5,242,821,897.90
  5. Step 5: Solve for x
    x = 5,242,821,897.90/78,816.76
  6. Step 6: Final answer
    x = 66,519.12

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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.