Home / 84,829.80-127,245-28,670.36

Finding the Fourth Proportional to 84,829.80, 127,245 and 28,670.36

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Solution

The fourth proportional to 84,829.80, 127,245 and 28,670.36 is: 43,005.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,829.80 : 127,245 = 28,670.36 : x
  2. Step 2: Convert to fraction form
    84,829.80/127,245 = 28,670.36/x
  3. Step 3: Cross multiply
    84,829.80x = 127,245 × 28,670.36
  4. Step 4: Simplify right side
    84,829.80x = 3,648,159,958.20
  5. Step 5: Solve for x
    x = 3,648,159,958.20/84,829.80
  6. Step 6: Final answer
    x = 43,005.64

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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.