Home / 86,486.98-129,683.39-39,046.50

Finding the Fourth Proportional to 86,486.98, 129,683.39 and 39,046.50

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Solution

The fourth proportional to 86,486.98, 129,683.39 and 39,046.50 is: 58,548.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,486.98 : 129,683.39 = 39,046.50 : x
  2. Step 2: Convert to fraction form
    86,486.98/129,683.39 = 39,046.50/x
  3. Step 3: Cross multiply
    86,486.98x = 129,683.39 × 39,046.50
  4. Step 4: Simplify right side
    86,486.98x = 5,063,682,487.64
  5. Step 5: Solve for x
    x = 5,063,682,487.64/86,486.98
  6. Step 6: Final answer
    x = 58,548.49

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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.