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Finding the Fourth Proportional to 57,038.49, 85,557.42 and 15,485.49

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Solution

The fourth proportional to 57,038.49, 85,557.42 and 15,485.49 is: 23,228.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,038.49 : 85,557.42 = 15,485.49 : x
  2. Step 2: Convert to fraction form
    57,038.49/85,557.42 = 15,485.49/x
  3. Step 3: Cross multiply
    57,038.49x = 85,557.42 × 15,485.49
  4. Step 4: Simplify right side
    57,038.49x = 1,324,898,571.84
  5. Step 5: Solve for x
    x = 1,324,898,571.84/57,038.49
  6. Step 6: Final answer
    x = 23,228.15

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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.