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Finding the Fourth Proportional to 49,059.55, 73,590 and 13,999.20

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Solution

The fourth proportional to 49,059.55, 73,590 and 13,999.20 is: 20,998.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,059.55 : 73,590 = 13,999.20 : x
  2. Step 2: Convert to fraction form
    49,059.55/73,590 = 13,999.20/x
  3. Step 3: Cross multiply
    49,059.55x = 73,590 × 13,999.20
  4. Step 4: Simplify right side
    49,059.55x = 1,030,201,128
  5. Step 5: Solve for x
    x = 1,030,201,128/49,059.55
  6. Step 6: Final answer
    x = 20,998.99

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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.