Home / 80,730.80-121,096.20-51,206.30

Finding the Fourth Proportional to 80,730.80, 121,096.20 and 51,206.30

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Solution

The fourth proportional to 80,730.80, 121,096.20 and 51,206.30 is: 76,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,730.80 : 121,096.20 = 51,206.30 : x
  2. Step 2: Convert to fraction form
    80,730.80/121,096.20 = 51,206.30/x
  3. Step 3: Cross multiply
    80,730.80x = 121,096.20 × 51,206.30
  4. Step 4: Simplify right side
    80,730.80x = 6,200,888,346.06
  5. Step 5: Solve for x
    x = 6,200,888,346.06/80,730.80
  6. Step 6: Final answer
    x = 76,809.45

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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.