Home / 80,277.90-120,384.51-52,155.81

Finding the Fourth Proportional to 80,277.90, 120,384.51 and 52,155.81

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Solution

The fourth proportional to 80,277.90, 120,384.51 and 52,155.81 is: 78,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,277.90 : 120,384.51 = 52,155.81 : x
  2. Step 2: Convert to fraction form
    80,277.90/120,384.51 = 52,155.81/x
  3. Step 3: Cross multiply
    80,277.90x = 120,384.51 × 52,155.81
  4. Step 4: Simplify right side
    80,277.90x = 6,278,751,630.50
  5. Step 5: Solve for x
    x = 6,278,751,630.50/80,277.90
  6. Step 6: Final answer
    x = 78,212.70

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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.