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Finding the Fourth Proportional to 34,133, 47,090.60 and 20,699.60

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Solution

The fourth proportional to 34,133, 47,090.60 and 20,699.60 is: 28,557.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,133 : 47,090.60 = 20,699.60 : x
  2. Step 2: Convert to fraction form
    34,133/47,090.60 = 20,699.60/x
  3. Step 3: Cross multiply
    34,133x = 47,090.60 × 20,699.60
  4. Step 4: Simplify right side
    34,133x = 974,756,583.76
  5. Step 5: Solve for x
    x = 974,756,583.76/34,133
  6. Step 6: Final answer
    x = 28,557.60

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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.