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Finding the Fourth Proportional to 64,682,978.40, 97,024,467.60 and 43,047,424.80

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Solution

The fourth proportional to 64,682,978.40, 97,024,467.60 and 43,047,424.80 is: 64,571,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,682,978.40 : 97,024,467.60 = 43,047,424.80 : x
  2. Step 2: Convert to fraction form
    64,682,978.40/97,024,467.60 = 43,047,424.80/x
  3. Step 3: Cross multiply
    64,682,978.40x = 97,024,467.60 × 43,047,424.80
  4. Step 4: Simplify right side
    64,682,978.40x = 4,176,653,472,771,036
  5. Step 5: Solve for x
    x = 4,176,653,472,771,036/64,682,978.40
  6. Step 6: Final answer
    x = 64,571,137.20

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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.