Home / 84,399.90-126,579.60-48,784.20

Finding the Fourth Proportional to 84,399.90, 126,579.60 and 48,784.20

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Solution

The fourth proportional to 84,399.90, 126,579.60 and 48,784.20 is: 73,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,399.90 : 126,579.60 = 48,784.20 : x
  2. Step 2: Convert to fraction form
    84,399.90/126,579.60 = 48,784.20/x
  3. Step 3: Cross multiply
    84,399.90x = 126,579.60 × 48,784.20
  4. Step 4: Simplify right side
    84,399.90x = 6,175,084,522.32
  5. Step 5: Solve for x
    x = 6,175,084,522.32/84,399.90
  6. Step 6: Final answer
    x = 73,164.60

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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.