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Finding the Fourth Proportional to 62,259.50, 85,918.11 and 39,903.50

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Solution

The fourth proportional to 62,259.50, 85,918.11 and 39,903.50 is: 55,066.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,259.50 : 85,918.11 = 39,903.50 : x
  2. Step 2: Convert to fraction form
    62,259.50/85,918.11 = 39,903.50/x
  3. Step 3: Cross multiply
    62,259.50x = 85,918.11 × 39,903.50
  4. Step 4: Simplify right side
    62,259.50x = 3,428,433,302.39
  5. Step 5: Solve for x
    x = 3,428,433,302.39/62,259.50
  6. Step 6: Final answer
    x = 55,066.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.