Home / 86,118.36-118,847.38-47,878.53

Finding the Fourth Proportional to 86,118.36, 118,847.38 and 47,878.53

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Solution

The fourth proportional to 86,118.36, 118,847.38 and 47,878.53 is: 66,074.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,118.36 : 118,847.38 = 47,878.53 : x
  2. Step 2: Convert to fraction form
    86,118.36/118,847.38 = 47,878.53/x
  3. Step 3: Cross multiply
    86,118.36x = 118,847.38 × 47,878.53
  4. Step 4: Simplify right side
    86,118.36x = 5,690,237,848.75
  5. Step 5: Solve for x
    x = 5,690,237,848.75/86,118.36
  6. Step 6: Final answer
    x = 66,074.62

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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.