Home / 85,914.14-128,921.45-35,990.01

Finding the Fourth Proportional to 85,914.14, 128,921.45 and 35,990.01

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Solution

The fourth proportional to 85,914.14, 128,921.45 and 35,990.01 is: 54,006.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,914.14 : 128,921.45 = 35,990.01 : x
  2. Step 2: Convert to fraction form
    85,914.14/128,921.45 = 35,990.01/x
  3. Step 3: Cross multiply
    85,914.14x = 128,921.45 × 35,990.01
  4. Step 4: Simplify right side
    85,914.14x = 4,639,884,094.76
  5. Step 5: Solve for x
    x = 4,639,884,094.76/85,914.14
  6. Step 6: Final answer
    x = 54,006.06

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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.