Home / 76,861,379.20-115,292,068.80-73,544,137.60

Finding the Fourth Proportional to 76,861,379.20, 115,292,068.80 and 73,544,137.60

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Solution

The fourth proportional to 76,861,379.20, 115,292,068.80 and 73,544,137.60 is: 110,316,206.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,861,379.20 : 115,292,068.80 = 73,544,137.60 : x
  2. Step 2: Convert to fraction form
    76,861,379.20/115,292,068.80 = 73,544,137.60/x
  3. Step 3: Cross multiply
    76,861,379.20x = 115,292,068.80 × 73,544,137.60
  4. Step 4: Simplify right side
    76,861,379.20x = 8,479,055,772,015,866
  5. Step 5: Solve for x
    x = 8,479,055,772,015,866/76,861,379.20
  6. Step 6: Final answer
    x = 110,316,206.40

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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.