Home / 39,870,733.89-55,021,634.82-21,536,019.39

Finding the Fourth Proportional to 39,870,733.89, 55,021,634.82 and 21,536,019.39

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Solution

The fourth proportional to 39,870,733.89, 55,021,634.82 and 21,536,019.39 is: 29,719,718.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,870,733.89 : 55,021,634.82 = 21,536,019.39 : x
  2. Step 2: Convert to fraction form
    39,870,733.89/55,021,634.82 = 21,536,019.39/x
  3. Step 3: Cross multiply
    39,870,733.89x = 55,021,634.82 × 21,536,019.39
  4. Step 4: Simplify right side
    39,870,733.89x = 1,184,946,994,353,019.25
  5. Step 5: Solve for x
    x = 1,184,946,994,353,019.25/39,870,733.89
  6. Step 6: Final answer
    x = 29,719,718.67

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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.