Home / 87,909,355.50-121,314,911.67-49,278,187.50

Finding the Fourth Proportional to 87,909,355.50, 121,314,911.67 and 49,278,187.50

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Solution

The fourth proportional to 87,909,355.50, 121,314,911.67 and 49,278,187.50 is: 68,003,899.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,909,355.50 : 121,314,911.67 = 49,278,187.50 : x
  2. Step 2: Convert to fraction form
    87,909,355.50/121,314,911.67 = 49,278,187.50/x
  3. Step 3: Cross multiply
    87,909,355.50x = 121,314,911.67 × 49,278,187.50
  4. Step 4: Simplify right side
    87,909,355.50x = 5,978,178,963,820,198
  5. Step 5: Solve for x
    x = 5,978,178,963,820,198/87,909,355.50
  6. Step 6: Final answer
    x = 68,003,899.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.