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Finding the Fourth Proportional to 74,424.69, 102,707.69 and 40,892.85

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Solution

The fourth proportional to 74,424.69, 102,707.69 and 40,892.85 is: 56,433.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,424.69 : 102,707.69 = 40,892.85 : x
  2. Step 2: Convert to fraction form
    74,424.69/102,707.69 = 40,892.85/x
  3. Step 3: Cross multiply
    74,424.69x = 102,707.69 × 40,892.85
  4. Step 4: Simplify right side
    74,424.69x = 4,200,010,161.02
  5. Step 5: Solve for x
    x = 4,200,010,161.02/74,424.69
  6. Step 6: Final answer
    x = 56,433.02

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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.