Home / 78,699,214.84-117,890,727.66-39,188,435.56

Finding the Fourth Proportional to 78,699,214.84, 117,890,727.66 and 39,188,435.56

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Solution

The fourth proportional to 78,699,214.84, 117,890,727.66 and 39,188,435.56 is: 58,703,929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,699,214.84 : 117,890,727.66 = 39,188,435.56 : x
  2. Step 2: Convert to fraction form
    78,699,214.84/117,890,727.66 = 39,188,435.56/x
  3. Step 3: Cross multiply
    78,699,214.84x = 117,890,727.66 × 39,188,435.56
  4. Step 4: Simplify right side
    78,699,214.84x = 4,619,953,184,025,420
  5. Step 5: Solve for x
    x = 4,619,953,184,025,420/78,699,214.84
  6. Step 6: Final answer
    x = 58,703,929.81

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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.