Home / 85,968,054.30-128,952,081.45-68,961,942.30

Finding the Fourth Proportional to 85,968,054.30, 128,952,081.45 and 68,961,942.30

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Solution

The fourth proportional to 85,968,054.30, 128,952,081.45 and 68,961,942.30 is: 103,442,913.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,054.30 : 128,952,081.45 = 68,961,942.30 : x
  2. Step 2: Convert to fraction form
    85,968,054.30/128,952,081.45 = 68,961,942.30/x
  3. Step 3: Cross multiply
    85,968,054.30x = 128,952,081.45 × 68,961,942.30
  4. Step 4: Simplify right side
    85,968,054.30x = 8,892,786,000,419,800
  5. Step 5: Solve for x
    x = 8,892,786,000,419,800/85,968,054.30
  6. Step 6: Final answer
    x = 103,442,913.45

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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.