Home / 72,983,878.62-100,718,019.32-39,493,357.85

Finding the Fourth Proportional to 72,983,878.62, 100,718,019.32 and 39,493,357.85

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Solution

The fourth proportional to 72,983,878.62, 100,718,019.32 and 39,493,357.85 is: 54,500,978.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,983,878.62 : 100,718,019.32 = 39,493,357.85 : x
  2. Step 2: Convert to fraction form
    72,983,878.62/100,718,019.32 = 39,493,357.85/x
  3. Step 3: Cross multiply
    72,983,878.62x = 100,718,019.32 × 39,493,357.85
  4. Step 4: Simplify right side
    72,983,878.62x = 3,977,692,778,947,973.50
  5. Step 5: Solve for x
    x = 3,977,692,778,947,973.50/72,983,878.62
  6. Step 6: Final answer
    x = 54,500,978.22

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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.