Home / 85,427.24-128,141.10-50,318.60

Finding the Fourth Proportional to 85,427.24, 128,141.10 and 50,318.60

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Solution

The fourth proportional to 85,427.24, 128,141.10 and 50,318.60 is: 75,478.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,427.24 : 128,141.10 = 50,318.60 : x
  2. Step 2: Convert to fraction form
    85,427.24/128,141.10 = 50,318.60/x
  3. Step 3: Cross multiply
    85,427.24x = 128,141.10 × 50,318.60
  4. Step 4: Simplify right side
    85,427.24x = 6,447,880,754.46
  5. Step 5: Solve for x
    x = 6,447,880,754.46/85,427.24
  6. Step 6: Final answer
    x = 75,478.04

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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.