Home / 86,761.20-130,185.36-34,208.40

Finding the Fourth Proportional to 86,761.20, 130,185.36 and 34,208.40

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Solution

The fourth proportional to 86,761.20, 130,185.36 and 34,208.40 is: 51,329.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,761.20 : 130,185.36 = 34,208.40 : x
  2. Step 2: Convert to fraction form
    86,761.20/130,185.36 = 34,208.40/x
  3. Step 3: Cross multiply
    86,761.20x = 130,185.36 × 34,208.40
  4. Step 4: Simplify right side
    86,761.20x = 4,453,432,869.02
  5. Step 5: Solve for x
    x = 4,453,432,869.02/86,761.20
  6. Step 6: Final answer
    x = 51,329.77

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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.