Home / 72,220,138.50-99,663,984.31-39,180,387.63

Finding the Fourth Proportional to 72,220,138.50, 99,663,984.31 and 39,180,387.63

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Solution

The fourth proportional to 72,220,138.50, 99,663,984.31 and 39,180,387.63 is: 54,069,039.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220,138.50 : 99,663,984.31 = 39,180,387.63 : x
  2. Step 2: Convert to fraction form
    72,220,138.50/99,663,984.31 = 39,180,387.63/x
  3. Step 3: Cross multiply
    72,220,138.50x = 99,663,984.31 × 39,180,387.63
  4. Step 4: Simplify right side
    72,220,138.50x = 3,904,873,537,820,136.50
  5. Step 5: Solve for x
    x = 3,904,873,537,820,136.50/72,220,138.50
  6. Step 6: Final answer
    x = 54,069,039.73

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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.