Home / 72,707,938.56-100,333,453.44-39,666,220.80

Finding the Fourth Proportional to 72,707,938.56, 100,333,453.44 and 39,666,220.80

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Solution

The fourth proportional to 72,707,938.56, 100,333,453.44 and 39,666,220.80 is: 54,737,474.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,707,938.56 : 100,333,453.44 = 39,666,220.80 : x
  2. Step 2: Convert to fraction form
    72,707,938.56/100,333,453.44 = 39,666,220.80/x
  3. Step 3: Cross multiply
    72,707,938.56x = 100,333,453.44 × 39,666,220.80
  4. Step 4: Simplify right side
    72,707,938.56x = 3,979,848,917,777,559
  5. Step 5: Solve for x
    x = 3,979,848,917,777,559/72,707,938.56
  6. Step 6: Final answer
    x = 54,737,474.29

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1.5x scale

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.