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Finding the Fourth Proportional to 74,522.93, 102,840.62 and 40,530.68

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Solution

The fourth proportional to 74,522.93, 102,840.62 and 40,530.68 is: 55,931.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,522.93 : 102,840.62 = 40,530.68 : x
  2. Step 2: Convert to fraction form
    74,522.93/102,840.62 = 40,530.68/x
  3. Step 3: Cross multiply
    74,522.93x = 102,840.62 × 40,530.68
  4. Step 4: Simplify right side
    74,522.93x = 4,168,199,543.37
  5. Step 5: Solve for x
    x = 4,168,199,543.37/74,522.93
  6. Step 6: Final answer
    x = 55,931.78

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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.