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Finding the Fourth Proportional to 74,645.73, 103,009.55 and 40,654.81

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Solution

The fourth proportional to 74,645.73, 103,009.55 and 40,654.81 is: 56,102.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,645.73 : 103,009.55 = 40,654.81 : x
  2. Step 2: Convert to fraction form
    74,645.73/103,009.55 = 40,654.81/x
  3. Step 3: Cross multiply
    74,645.73x = 103,009.55 × 40,654.81
  4. Step 4: Simplify right side
    74,645.73x = 4,187,833,683.44
  5. Step 5: Solve for x
    x = 4,187,833,683.44/74,645.73
  6. Step 6: Final answer
    x = 56,102.79

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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.