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Finding the Fourth Proportional to 62,304.50, 86,019.10 and 39,987.38

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Solution

The fourth proportional to 62,304.50, 86,019.10 and 39,987.38 is: 55,207.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,304.50 : 86,019.10 = 39,987.38 : x
  2. Step 2: Convert to fraction form
    62,304.50/86,019.10 = 39,987.38/x
  3. Step 3: Cross multiply
    62,304.50x = 86,019.10 × 39,987.38
  4. Step 4: Simplify right side
    62,304.50x = 3,439,678,438.96
  5. Step 5: Solve for x
    x = 3,439,678,438.96/62,304.50
  6. Step 6: Final answer
    x = 55,207.54

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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.