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Finding the Fourth Proportional to 76,581,628.80, 114,659,866.80 and 74,455,864.80

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Solution

The fourth proportional to 76,581,628.80, 114,659,866.80 and 74,455,864.80 is: 111,477,121.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,581,628.80 : 114,659,866.80 = 74,455,864.80 : x
  2. Step 2: Convert to fraction form
    76,581,628.80/114,659,866.80 = 74,455,864.80/x
  3. Step 3: Cross multiply
    76,581,628.80x = 114,659,866.80 × 74,455,864.80
  4. Step 4: Simplify right side
    76,581,628.80x = 8,537,099,540,446,808
  5. Step 5: Solve for x
    x = 8,537,099,540,446,808/76,581,628.80
  6. Step 6: Final answer
    x = 111,477,121.53

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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.