Home / 72,724,912.36-100,362,508.67-39,687,290.58

Finding the Fourth Proportional to 72,724,912.36, 100,362,508.67 and 39,687,290.58

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Solution

The fourth proportional to 72,724,912.36, 100,362,508.67 and 39,687,290.58 is: 54,769,623.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,724,912.36 : 100,362,508.67 = 39,687,290.58 : x
  2. Step 2: Convert to fraction form
    72,724,912.36/100,362,508.67 = 39,687,290.58/x
  3. Step 3: Cross multiply
    72,724,912.36x = 100,362,508.67 × 39,687,290.58
  4. Step 4: Simplify right side
    72,724,912.36x = 3,983,116,044,924,059
  5. Step 5: Solve for x
    x = 3,983,116,044,924,059/72,724,912.36
  6. Step 6: Final answer
    x = 54,769,623.17

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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.