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Finding the Fourth Proportional to 74,673.63, 103,048.20 and 40,682.79

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Solution

The fourth proportional to 74,673.63, 103,048.20 and 40,682.79 is: 56,141.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,673.63 : 103,048.20 = 40,682.79 : x
  2. Step 2: Convert to fraction form
    74,673.63/103,048.20 = 40,682.79/x
  3. Step 3: Cross multiply
    74,673.63x = 103,048.20 × 40,682.79
  4. Step 4: Simplify right side
    74,673.63x = 4,192,288,280.48
  5. Step 5: Solve for x
    x = 4,192,288,280.48/74,673.63
  6. Step 6: Final answer
    x = 56,141.48

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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.