Home / 85,581.38-128,334.62-40,615.62

Finding the Fourth Proportional to 85,581.38, 128,334.62 and 40,615.62

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Solution

The fourth proportional to 85,581.38, 128,334.62 and 40,615.62 is: 60,905.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,581.38 : 128,334.62 = 40,615.62 : x
  2. Step 2: Convert to fraction form
    85,581.38/128,334.62 = 40,615.62/x
  3. Step 3: Cross multiply
    85,581.38x = 128,334.62 × 40,615.62
  4. Step 4: Simplify right side
    85,581.38x = 5,212,390,158.76
  5. Step 5: Solve for x
    x = 5,212,390,158.76/85,581.38
  6. Step 6: Final answer
    x = 60,905.66

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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.