Home / 86,728.26-130,092.40-21,064.26

Finding the Fourth Proportional to 86,728.26, 130,092.40 and 21,064.26

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Solution

The fourth proportional to 86,728.26, 130,092.40 and 21,064.26 is: 31,596.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,728.26 : 130,092.40 = 21,064.26 : x
  2. Step 2: Convert to fraction form
    86,728.26/130,092.40 = 21,064.26/x
  3. Step 3: Cross multiply
    86,728.26x = 130,092.40 × 21,064.26
  4. Step 4: Simplify right side
    86,728.26x = 2,740,300,137.62
  5. Step 5: Solve for x
    x = 2,740,300,137.62/86,728.26
  6. Step 6: Final answer
    x = 31,596.39

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1.5x scale

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.