Home / 80,615.57-111,258.50-48,783.78

Finding the Fourth Proportional to 80,615.57, 111,258.50 and 48,783.78

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Solution

The fourth proportional to 80,615.57, 111,258.50 and 48,783.78 is: 67,327.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,615.57 : 111,258.50 = 48,783.78 : x
  2. Step 2: Convert to fraction form
    80,615.57/111,258.50 = 48,783.78/x
  3. Step 3: Cross multiply
    80,615.57x = 111,258.50 × 48,783.78
  4. Step 4: Simplify right side
    80,615.57x = 5,427,609,943.21
  5. Step 5: Solve for x
    x = 5,427,609,943.21/80,615.57
  6. Step 6: Final answer
    x = 67,327.07

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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.