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Finding the Fourth Proportional to 74,073.61, 111,090.60 and 20,762.60

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Solution

The fourth proportional to 74,073.61, 111,090.60 and 20,762.60 is: 31,138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,073.61 : 111,090.60 = 20,762.60 : x
  2. Step 2: Convert to fraction form
    74,073.61/111,090.60 = 20,762.60/x
  3. Step 3: Cross multiply
    74,073.61x = 111,090.60 × 20,762.60
  4. Step 4: Simplify right side
    74,073.61x = 2,306,529,691.56
  5. Step 5: Solve for x
    x = 2,306,529,691.56/74,073.61
  6. Step 6: Final answer
    x = 31,138.35

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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.