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Finding the Fourth Proportional to 74,356.50, 102,612.69 and 40,823.22

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Solution

The fourth proportional to 74,356.50, 102,612.69 and 40,823.22 is: 56,336.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,356.50 : 102,612.69 = 40,823.22 : x
  2. Step 2: Convert to fraction form
    74,356.50/102,612.69 = 40,823.22/x
  3. Step 3: Cross multiply
    74,356.50x = 102,612.69 × 40,823.22
  4. Step 4: Simplify right side
    74,356.50x = 4,188,980,418.66
  5. Step 5: Solve for x
    x = 4,188,980,418.66/74,356.50
  6. Step 6: Final answer
    x = 56,336.44

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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.