Home / 86,812.85-130,259.78-30,695.45

Finding the Fourth Proportional to 86,812.85, 130,259.78 and 30,695.45

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Solution

The fourth proportional to 86,812.85, 130,259.78 and 30,695.45 is: 46,057.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,812.85 : 130,259.78 = 30,695.45 : x
  2. Step 2: Convert to fraction form
    86,812.85/130,259.78 = 30,695.45/x
  3. Step 3: Cross multiply
    86,812.85x = 130,259.78 × 30,695.45
  4. Step 4: Simplify right side
    86,812.85x = 3,998,381,759.22
  5. Step 5: Solve for x
    x = 3,998,381,759.22/86,812.85
  6. Step 6: Final answer
    x = 46,057.49

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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.