Home / 65,870,824.88-90,871,930.40-39,756,995.12

Finding the Fourth Proportional to 65,870,824.88, 90,871,930.40 and 39,756,995.12

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Solution

The fourth proportional to 65,870,824.88, 90,871,930.40 and 39,756,995.12 is: 54,846,662.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,870,824.88 : 90,871,930.40 = 39,756,995.12 : x
  2. Step 2: Convert to fraction form
    65,870,824.88/90,871,930.40 = 39,756,995.12/x
  3. Step 3: Cross multiply
    65,870,824.88x = 90,871,930.40 × 39,756,995.12
  4. Step 4: Simplify right side
    65,870,824.88x = 3,612,794,893,457,779.50
  5. Step 5: Solve for x
    x = 3,612,794,893,457,779.50/65,870,824.88
  6. Step 6: Final answer
    x = 54,846,662.39

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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.