Home / 76,736,469.60-115,104,704.40-66,434,824.80

Finding the Fourth Proportional to 76,736,469.60, 115,104,704.40 and 66,434,824.80

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Solution

The fourth proportional to 76,736,469.60, 115,104,704.40 and 66,434,824.80 is: 99,652,237.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,736,469.60 : 115,104,704.40 = 66,434,824.80 : x
  2. Step 2: Convert to fraction form
    76,736,469.60/115,104,704.40 = 66,434,824.80/x
  3. Step 3: Cross multiply
    76,736,469.60x = 115,104,704.40 × 66,434,824.80
  4. Step 4: Simplify right side
    76,736,469.60x = 7,646,960,870,469,789
  5. Step 5: Solve for x
    x = 7,646,960,870,469,789/76,736,469.60
  6. Step 6: Final answer
    x = 99,652,237.20

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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.