Home / 86,676.20-130,014.30-34,087.40

Finding the Fourth Proportional to 86,676.20, 130,014.30 and 34,087.40

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Solution

The fourth proportional to 86,676.20, 130,014.30 and 34,087.40 is: 51,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,676.20 : 130,014.30 = 34,087.40 : x
  2. Step 2: Convert to fraction form
    86,676.20/130,014.30 = 34,087.40/x
  3. Step 3: Cross multiply
    86,676.20x = 130,014.30 × 34,087.40
  4. Step 4: Simplify right side
    86,676.20x = 4,431,849,449.82
  5. Step 5: Solve for x
    x = 4,431,849,449.82/86,676.20
  6. Step 6: Final answer
    x = 51,131.10

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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.