Home / 71,165,139.20-106,747,708.80-65,622,406.40

Finding the Fourth Proportional to 71,165,139.20, 106,747,708.80 and 65,622,406.40

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Solution

The fourth proportional to 71,165,139.20, 106,747,708.80 and 65,622,406.40 is: 98,433,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,165,139.20 : 106,747,708.80 = 65,622,406.40 : x
  2. Step 2: Convert to fraction form
    71,165,139.20/106,747,708.80 = 65,622,406.40/x
  3. Step 3: Cross multiply
    71,165,139.20x = 106,747,708.80 × 65,622,406.40
  4. Step 4: Simplify right side
    71,165,139.20x = 7,005,041,529,142,456
  5. Step 5: Solve for x
    x = 7,005,041,529,142,456/71,165,139.20
  6. Step 6: Final answer
    x = 98,433,609.60

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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.