Home / 72,157,085.69-108,253,675.34-21,039,104.50

Finding the Fourth Proportional to 72,157,085.69, 108,253,675.34 and 21,039,104.50

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Solution

The fourth proportional to 72,157,085.69, 108,253,675.34 and 21,039,104.50 is: 31,563,918.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,157,085.69 : 108,253,675.34 = 21,039,104.50 : x
  2. Step 2: Convert to fraction form
    72,157,085.69/108,253,675.34 = 21,039,104.50/x
  3. Step 3: Cross multiply
    72,157,085.69x = 108,253,675.34 × 21,039,104.50
  4. Step 4: Simplify right side
    72,157,085.69x = 2,277,560,387,987,333
  5. Step 5: Solve for x
    x = 2,277,560,387,987,333/72,157,085.69
  6. Step 6: Final answer
    x = 31,563,918.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.