Home / 85,630.62-128,522.24-40,707.36

Finding the Fourth Proportional to 85,630.62, 128,522.24 and 40,707.36

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Solution

The fourth proportional to 85,630.62, 128,522.24 and 40,707.36 is: 61,097.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,630.62 : 128,522.24 = 40,707.36 : x
  2. Step 2: Convert to fraction form
    85,630.62/128,522.24 = 40,707.36/x
  3. Step 3: Cross multiply
    85,630.62x = 128,522.24 × 40,707.36
  4. Step 4: Simplify right side
    85,630.62x = 5,231,801,269.78
  5. Step 5: Solve for x
    x = 5,231,801,269.78/85,630.62
  6. Step 6: Final answer
    x = 61,097.32

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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.