Home / 72,983,879.31-100,718,020.27-39,493,358.54

Finding the Fourth Proportional to 72,983,879.31, 100,718,020.27 and 39,493,358.54

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Solution

The fourth proportional to 72,983,879.31, 100,718,020.27 and 39,493,358.54 is: 54,500,979.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,983,879.31 : 100,718,020.27 = 39,493,358.54 : x
  2. Step 2: Convert to fraction form
    72,983,879.31/100,718,020.27 = 39,493,358.54/x
  3. Step 3: Cross multiply
    72,983,879.31x = 100,718,020.27 × 39,493,358.54
  4. Step 4: Simplify right side
    72,983,879.31x = 3,977,692,885,962,097.50
  5. Step 5: Solve for x
    x = 3,977,692,885,962,097.50/72,983,879.31
  6. Step 6: Final answer
    x = 54,500,979.17

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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.