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Finding the Fourth Proportional to 85,535.90, 128,325.71 and 35,599.40

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Solution

The fourth proportional to 85,535.90, 128,325.71 and 35,599.40 is: 53,408.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535.90 : 128,325.71 = 35,599.40 : x
  2. Step 2: Convert to fraction form
    85,535.90/128,325.71 = 35,599.40/x
  3. Step 3: Cross multiply
    85,535.90x = 128,325.71 × 35,599.40
  4. Step 4: Simplify right side
    85,535.90x = 4,568,317,727.94
  5. Step 5: Solve for x
    x = 4,568,317,727.94/85,535.90
  6. Step 6: Final answer
    x = 53,408.19

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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.