Home / 86,976.20-130,464.30-51,984.20

Finding the Fourth Proportional to 86,976.20, 130,464.30 and 51,984.20

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Solution

The fourth proportional to 86,976.20, 130,464.30 and 51,984.20 is: 77,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,976.20 : 130,464.30 = 51,984.20 : x
  2. Step 2: Convert to fraction form
    86,976.20/130,464.30 = 51,984.20/x
  3. Step 3: Cross multiply
    86,976.20x = 130,464.30 × 51,984.20
  4. Step 4: Simplify right side
    86,976.20x = 6,782,082,264.06
  5. Step 5: Solve for x
    x = 6,782,082,264.06/86,976.20
  6. Step 6: Final answer
    x = 77,976.30

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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.