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Finding the Fourth Proportional to 74,408.58, 102,684.95 and 40,417.73

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Solution

The fourth proportional to 74,408.58, 102,684.95 and 40,417.73 is: 55,777.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,408.58 : 102,684.95 = 40,417.73 : x
  2. Step 2: Convert to fraction form
    74,408.58/102,684.95 = 40,417.73/x
  3. Step 3: Cross multiply
    74,408.58x = 102,684.95 × 40,417.73
  4. Step 4: Simplify right side
    74,408.58x = 4,150,292,405.29
  5. Step 5: Solve for x
    x = 4,150,292,405.29/74,408.58
  6. Step 6: Final answer
    x = 55,777.07

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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.