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Finding the Fourth Proportional to 62,305.50, 86,020.48 and 39,988.38

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Solution

The fourth proportional to 62,305.50, 86,020.48 and 39,988.38 is: 55,208.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,305.50 : 86,020.48 = 39,988.38 : x
  2. Step 2: Convert to fraction form
    62,305.50/86,020.48 = 39,988.38/x
  3. Step 3: Cross multiply
    62,305.50x = 86,020.48 × 39,988.38
  4. Step 4: Simplify right side
    62,305.50x = 3,439,819,642.02
  5. Step 5: Solve for x
    x = 3,439,819,642.02/62,305.50
  6. Step 6: Final answer
    x = 55,208.92

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1.5x scale

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.