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Finding the Fourth Proportional to 76,779,007.60, 114,944,562.60 and 68,716,850.80

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Solution

The fourth proportional to 76,779,007.60, 114,944,562.60 and 68,716,850.80 is: 102,874,843.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,779,007.60 : 114,944,562.60 = 68,716,850.80 : x
  2. Step 2: Convert to fraction form
    76,779,007.60/114,944,562.60 = 68,716,850.80/x
  3. Step 3: Cross multiply
    76,779,007.60x = 114,944,562.60 × 68,716,850.80
  4. Step 4: Simplify right side
    76,779,007.60x = 7,898,628,358,455,459
  5. Step 5: Solve for x
    x = 7,898,628,358,455,459/76,779,007.60
  6. Step 6: Final answer
    x = 102,874,843.08

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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.