Home / 85,968,048.30-128,952,072.45-68,961,936.30

Finding the Fourth Proportional to 85,968,048.30, 128,952,072.45 and 68,961,936.30

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Solution

The fourth proportional to 85,968,048.30, 128,952,072.45 and 68,961,936.30 is: 103,442,904.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,048.30 : 128,952,072.45 = 68,961,936.30 : x
  2. Step 2: Convert to fraction form
    85,968,048.30/128,952,072.45 = 68,961,936.30/x
  3. Step 3: Cross multiply
    85,968,048.30x = 128,952,072.45 × 68,961,936.30
  4. Step 4: Simplify right side
    85,968,048.30x = 8,892,784,606,049,885
  5. Step 5: Solve for x
    x = 8,892,784,606,049,885/85,968,048.30
  6. Step 6: Final answer
    x = 103,442,904.45

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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.