Home / 69,679,928.45-104,513,138.70-21,158,208.77

Finding the Fourth Proportional to 69,679,928.45, 104,513,138.70 and 21,158,208.77

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Solution

The fourth proportional to 69,679,928.45, 104,513,138.70 and 21,158,208.77 is: 31,735,262.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,679,928.45 : 104,513,138.70 = 21,158,208.77 : x
  2. Step 2: Convert to fraction form
    69,679,928.45/104,513,138.70 = 21,158,208.77/x
  3. Step 3: Cross multiply
    69,679,928.45x = 104,513,138.70 × 21,158,208.77
  4. Step 4: Simplify right side
    69,679,928.45x = 2,211,310,807,300,000.75
  5. Step 5: Solve for x
    x = 2,211,310,807,300,000.75/69,679,928.45
  6. Step 6: Final answer
    x = 31,735,262.32

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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.