Home / 86,723.80-130,114.86-34,138.60

Finding the Fourth Proportional to 86,723.80, 130,114.86 and 34,138.60

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Solution

The fourth proportional to 86,723.80, 130,114.86 and 34,138.60 is: 51,219.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,723.80 : 130,114.86 = 34,138.60 : x
  2. Step 2: Convert to fraction form
    86,723.80/130,114.86 = 34,138.60/x
  3. Step 3: Cross multiply
    86,723.80x = 130,114.86 × 34,138.60
  4. Step 4: Simplify right side
    86,723.80x = 4,441,939,159.60
  5. Step 5: Solve for x
    x = 4,441,939,159.60/86,723.80
  6. Step 6: Final answer
    x = 51,219.38

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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.