Home / 86,027.10-128,981.70-43,825.50

Finding the Fourth Proportional to 86,027.10, 128,981.70 and 43,825.50

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Solution

The fourth proportional to 86,027.10, 128,981.70 and 43,825.50 is: 65,708.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,027.10 : 128,981.70 = 43,825.50 : x
  2. Step 2: Convert to fraction form
    86,027.10/128,981.70 = 43,825.50/x
  3. Step 3: Cross multiply
    86,027.10x = 128,981.70 × 43,825.50
  4. Step 4: Simplify right side
    86,027.10x = 5,652,687,493.35
  5. Step 5: Solve for x
    x = 5,652,687,493.35/86,027.10
  6. Step 6: Final answer
    x = 65,708.22

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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.