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Finding the Fourth Proportional to 74,654.93, 103,020.72 and 40,663.55

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Solution

The fourth proportional to 74,654.93, 103,020.72 and 40,663.55 is: 56,114.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,654.93 : 103,020.72 = 40,663.55 : x
  2. Step 2: Convert to fraction form
    74,654.93/103,020.72 = 40,663.55/x
  3. Step 3: Cross multiply
    74,654.93x = 103,020.72 × 40,663.55
  4. Step 4: Simplify right side
    74,654.93x = 4,189,188,198.76
  5. Step 5: Solve for x
    x = 4,189,188,198.76/74,654.93
  6. Step 6: Final answer
    x = 56,114.02

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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.