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Finding the Fourth Proportional to 74,369.63, 102,630.09 and 40,835.63

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Solution

The fourth proportional to 74,369.63, 102,630.09 and 40,835.63 is: 56,353.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,369.63 : 102,630.09 = 40,835.63 : x
  2. Step 2: Convert to fraction form
    74,369.63/102,630.09 = 40,835.63/x
  3. Step 3: Cross multiply
    74,369.63x = 102,630.09 × 40,835.63
  4. Step 4: Simplify right side
    74,369.63x = 4,190,964,382.11
  5. Step 5: Solve for x
    x = 4,190,964,382.11/74,369.63
  6. Step 6: Final answer
    x = 56,353.17

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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.