Home / 85,683.07-128,520.91-23,353.57

Finding the Fourth Proportional to 85,683.07, 128,520.91 and 23,353.57

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Solution

The fourth proportional to 85,683.07, 128,520.91 and 23,353.57 is: 35,029.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,683.07 : 128,520.91 = 23,353.57 : x
  2. Step 2: Convert to fraction form
    85,683.07/128,520.91 = 23,353.57/x
  3. Step 3: Cross multiply
    85,683.07x = 128,520.91 × 23,353.57
  4. Step 4: Simplify right side
    85,683.07x = 3,001,422,068.15
  5. Step 5: Solve for x
    x = 3,001,422,068.15/85,683.07
  6. Step 6: Final answer
    x = 35,029.35

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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.