Home / 66,472,638.72-91,747,546.93-38,979,424.32

Finding the Fourth Proportional to 66,472,638.72, 91,747,546.93 and 38,979,424.32

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Solution

The fourth proportional to 66,472,638.72, 91,747,546.93 and 38,979,424.32 is: 53,800,580.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,472,638.72 : 91,747,546.93 = 38,979,424.32 : x
  2. Step 2: Convert to fraction form
    66,472,638.72/91,747,546.93 = 38,979,424.32/x
  3. Step 3: Cross multiply
    66,472,638.72x = 91,747,546.93 × 38,979,424.32
  4. Step 4: Simplify right side
    66,472,638.72x = 3,576,266,562,103,583.50
  5. Step 5: Solve for x
    x = 3,576,266,562,103,583.50/66,472,638.72
  6. Step 6: Final answer
    x = 53,800,580.67

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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.