Home / 86,255.93-129,342.96-30,089.21

Finding the Fourth Proportional to 86,255.93, 129,342.96 and 30,089.21

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Solution

The fourth proportional to 86,255.93, 129,342.96 and 30,089.21 is: 45,119.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,255.93 : 129,342.96 = 30,089.21 : x
  2. Step 2: Convert to fraction form
    86,255.93/129,342.96 = 30,089.21/x
  3. Step 3: Cross multiply
    86,255.93x = 129,342.96 × 30,089.21
  4. Step 4: Simplify right side
    86,255.93x = 3,891,827,485.46
  5. Step 5: Solve for x
    x = 3,891,827,485.46/86,255.93
  6. Step 6: Final answer
    x = 45,119.54

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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.