Home / 72,220,138.44-99,663,984.23-39,180,387.57

Finding the Fourth Proportional to 72,220,138.44, 99,663,984.23 and 39,180,387.57

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Solution

The fourth proportional to 72,220,138.44, 99,663,984.23 and 39,180,387.57 is: 54,069,039.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220,138.44 : 99,663,984.23 = 39,180,387.57 : x
  2. Step 2: Convert to fraction form
    72,220,138.44/99,663,984.23 = 39,180,387.57/x
  3. Step 3: Cross multiply
    72,220,138.44x = 99,663,984.23 × 39,180,387.57
  4. Step 4: Simplify right side
    72,220,138.44x = 3,904,873,529,338,432.50
  5. Step 5: Solve for x
    x = 3,904,873,529,338,432.50/72,220,138.44
  6. Step 6: Final answer
    x = 54,069,039.65

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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.