Home / 85,399.66-128,099.20-23,070.16

Finding the Fourth Proportional to 85,399.66, 128,099.20 and 23,070.16

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Solution

The fourth proportional to 85,399.66, 128,099.20 and 23,070.16 is: 34,605.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,399.66 : 128,099.20 = 23,070.16 : x
  2. Step 2: Convert to fraction form
    85,399.66/128,099.20 = 23,070.16/x
  3. Step 3: Cross multiply
    85,399.66x = 128,099.20 × 23,070.16
  4. Step 4: Simplify right side
    85,399.66x = 2,955,269,039.87
  5. Step 5: Solve for x
    x = 2,955,269,039.87/85,399.66
  6. Step 6: Final answer
    x = 34,605.16

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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.