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Finding the Fourth Proportional to 72,522.76, 100,076.16 and 40,259.12

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Solution

The fourth proportional to 72,522.76, 100,076.16 and 40,259.12 is: 55,554.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,522.76 : 100,076.16 = 40,259.12 : x
  2. Step 2: Convert to fraction form
    72,522.76/100,076.16 = 40,259.12/x
  3. Step 3: Cross multiply
    72,522.76x = 100,076.16 × 40,259.12
  4. Step 4: Simplify right side
    72,522.76x = 4,028,978,134.58
  5. Step 5: Solve for x
    x = 4,028,978,134.58/72,522.76
  6. Step 6: Final answer
    x = 55,554.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.