Home / 85,464,949.72-128,062,989.69-66,081,524.98

Finding the Fourth Proportional to 85,464,949.72, 128,062,989.69 and 66,081,524.98

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Solution

The fourth proportional to 85,464,949.72, 128,062,989.69 and 66,081,524.98 is: 99,018,342.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,464,949.72 : 128,062,989.69 = 66,081,524.98 : x
  2. Step 2: Convert to fraction form
    85,464,949.72/128,062,989.69 = 66,081,524.98/x
  3. Step 3: Cross multiply
    85,464,949.72x = 128,062,989.69 × 66,081,524.98
  4. Step 4: Simplify right side
    85,464,949.72x = 8,462,597,652,213,217
  5. Step 5: Solve for x
    x = 8,462,597,652,213,217/85,464,949.72
  6. Step 6: Final answer
    x = 99,018,342.37

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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.