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Finding the Fourth Proportional to 81,503.68, 122,242.40 and 22,325.51

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Solution

The fourth proportional to 81,503.68, 122,242.40 and 22,325.51 is: 33,484.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,503.68 : 122,242.40 = 22,325.51 : x
  2. Step 2: Convert to fraction form
    81,503.68/122,242.40 = 22,325.51/x
  3. Step 3: Cross multiply
    81,503.68x = 122,242.40 × 22,325.51
  4. Step 4: Simplify right side
    81,503.68x = 2,729,123,812.00
  5. Step 5: Solve for x
    x = 2,729,123,812.00/81,503.68
  6. Step 6: Final answer
    x = 33,484.67

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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.