Home / 85,954.06-128,931.98-25,983.03

Finding the Fourth Proportional to 85,954.06, 128,931.98 and 25,983.03

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Solution

The fourth proportional to 85,954.06, 128,931.98 and 25,983.03 is: 38,974.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954.06 : 128,931.98 = 25,983.03 : x
  2. Step 2: Convert to fraction form
    85,954.06/128,931.98 = 25,983.03/x
  3. Step 3: Cross multiply
    85,954.06x = 128,931.98 × 25,983.03
  4. Step 4: Simplify right side
    85,954.06x = 3,350,043,374.38
  5. Step 5: Solve for x
    x = 3,350,043,374.38/85,954.06
  6. Step 6: Final answer
    x = 38,974.81

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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.