Home / 77,206,081.31-115,808,869.37-28,021,869.06

Finding the Fourth Proportional to 77,206,081.31, 115,808,869.37 and 28,021,869.06

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Solution

The fourth proportional to 77,206,081.31, 115,808,869.37 and 28,021,869.06 is: 42,032,711.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,206,081.31 : 115,808,869.37 = 28,021,869.06 : x
  2. Step 2: Convert to fraction form
    77,206,081.31/115,808,869.37 = 28,021,869.06/x
  3. Step 3: Cross multiply
    77,206,081.31x = 115,808,869.37 × 28,021,869.06
  4. Step 4: Simplify right side
    77,206,081.31x = 3,245,180,973,542,839.50
  5. Step 5: Solve for x
    x = 3,245,180,973,542,839.50/77,206,081.31
  6. Step 6: Final answer
    x = 42,032,711.91

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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.