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Finding the Fourth Proportional to 95,990.86, 143,985.68 and 51,638.50

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Solution

The fourth proportional to 95,990.86, 143,985.68 and 51,638.50 is: 77,457.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,990.86 : 143,985.68 = 51,638.50 : x
  2. Step 2: Convert to fraction form
    95,990.86/143,985.68 = 51,638.50/x
  3. Step 3: Cross multiply
    95,990.86x = 143,985.68 × 51,638.50
  4. Step 4: Simplify right side
    95,990.86x = 7,435,204,536.68
  5. Step 5: Solve for x
    x = 7,435,204,536.68/95,990.86
  6. Step 6: Final answer
    x = 77,457.42

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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.