Home / 85,923.06-128,832.81-38,529.57

Finding the Fourth Proportional to 85,923.06, 128,832.81 and 38,529.57

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Solution

The fourth proportional to 85,923.06, 128,832.81 and 38,529.57 is: 57,771.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,923.06 : 128,832.81 = 38,529.57 : x
  2. Step 2: Convert to fraction form
    85,923.06/128,832.81 = 38,529.57/x
  3. Step 3: Cross multiply
    85,923.06x = 128,832.81 × 38,529.57
  4. Step 4: Simplify right side
    85,923.06x = 4,963,872,771.19
  5. Step 5: Solve for x
    x = 4,963,872,771.19/85,923.06
  6. Step 6: Final answer
    x = 57,771.14

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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.