Home / 85,405,221.75-128,146,870.59-46,485,369.75

Finding the Fourth Proportional to 85,405,221.75, 128,146,870.59 and 46,485,369.75

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Solution

The fourth proportional to 85,405,221.75, 128,146,870.59 and 46,485,369.75 is: 69,749,302.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,405,221.75 : 128,146,870.59 = 46,485,369.75 : x
  2. Step 2: Convert to fraction form
    85,405,221.75/128,146,870.59 = 46,485,369.75/x
  3. Step 3: Cross multiply
    85,405,221.75x = 128,146,870.59 × 46,485,369.75
  4. Step 4: Simplify right side
    85,405,221.75x = 5,956,954,661,681,551
  5. Step 5: Solve for x
    x = 5,956,954,661,681,551/85,405,221.75
  6. Step 6: Final answer
    x = 69,749,302.67

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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.