Home / 78,825.45-108,779.42-43,016.25

Finding the Fourth Proportional to 78,825.45, 108,779.42 and 43,016.25

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Solution

The fourth proportional to 78,825.45, 108,779.42 and 43,016.25 is: 59,362.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,825.45 : 108,779.42 = 43,016.25 : x
  2. Step 2: Convert to fraction form
    78,825.45/108,779.42 = 43,016.25/x
  3. Step 3: Cross multiply
    78,825.45x = 108,779.42 × 43,016.25
  4. Step 4: Simplify right side
    78,825.45x = 4,679,282,833.12
  5. Step 5: Solve for x
    x = 4,679,282,833.12/78,825.45
  6. Step 6: Final answer
    x = 59,362.59

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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.