Home / 76,734,163.60-115,101,245.40-66,880,416.40

Finding the Fourth Proportional to 76,734,163.60, 115,101,245.40 and 66,880,416.40

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Solution

The fourth proportional to 76,734,163.60, 115,101,245.40 and 66,880,416.40 is: 100,320,624.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,734,163.60 : 115,101,245.40 = 66,880,416.40 : x
  2. Step 2: Convert to fraction form
    76,734,163.60/115,101,245.40 = 66,880,416.40/x
  3. Step 3: Cross multiply
    76,734,163.60x = 115,101,245.40 × 66,880,416.40
  4. Step 4: Simplify right side
    76,734,163.60x = 7,698,019,220,510,585
  5. Step 5: Solve for x
    x = 7,698,019,220,510,585/76,734,163.60
  6. Step 6: Final answer
    x = 100,320,624.60

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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.