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Finding the Fourth Proportional to 70,481,442.40, 105,722,163.60 and 65,698,473.40

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Solution

The fourth proportional to 70,481,442.40, 105,722,163.60 and 65,698,473.40 is: 98,547,710.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,481,442.40 : 105,722,163.60 = 65,698,473.40 : x
  2. Step 2: Convert to fraction form
    70,481,442.40/105,722,163.60 = 65,698,473.40/x
  3. Step 3: Cross multiply
    70,481,442.40x = 105,722,163.60 × 65,698,473.40
  4. Step 4: Simplify right side
    70,481,442.40x = 6,945,784,753,065,048
  5. Step 5: Solve for x
    x = 6,945,784,753,065,048/70,481,442.40
  6. Step 6: Final answer
    x = 98,547,710.10

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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.