Home / 72,983,890.85-100,718,036.19-39,493,370.12

Finding the Fourth Proportional to 72,983,890.85, 100,718,036.19 and 39,493,370.12

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Solution

The fourth proportional to 72,983,890.85, 100,718,036.19 and 39,493,370.12 is: 54,500,995.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,983,890.85 : 100,718,036.19 = 39,493,370.12 : x
  2. Step 2: Convert to fraction form
    72,983,890.85/100,718,036.19 = 39,493,370.12/x
  3. Step 3: Cross multiply
    72,983,890.85x = 100,718,036.19 × 39,493,370.12
  4. Step 4: Simplify right side
    72,983,890.85x = 3,977,694,680,507,634.50
  5. Step 5: Solve for x
    x = 3,977,694,680,507,634.50/72,983,890.85
  6. Step 6: Final answer
    x = 54,500,995.14

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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.