Home / 86,863.19-130,219.38-34,259.76

Finding the Fourth Proportional to 86,863.19, 130,219.38 and 34,259.76

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Solution

The fourth proportional to 86,863.19, 130,219.38 and 34,259.76 is: 51,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,863.19 : 130,219.38 = 34,259.76 : x
  2. Step 2: Convert to fraction form
    86,863.19/130,219.38 = 34,259.76/x
  3. Step 3: Cross multiply
    86,863.19x = 130,219.38 × 34,259.76
  4. Step 4: Simplify right side
    86,863.19x = 4,461,284,706.15
  5. Step 5: Solve for x
    x = 4,461,284,706.15/86,863.19
  6. Step 6: Final answer
    x = 51,359.90

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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.