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Finding the Fourth Proportional to 74,402.49, 102,675.74 and 40,411.55

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Solution

The fourth proportional to 74,402.49, 102,675.74 and 40,411.55 is: 55,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,402.49 : 102,675.74 = 40,411.55 : x
  2. Step 2: Convert to fraction form
    74,402.49/102,675.74 = 40,411.55/x
  3. Step 3: Cross multiply
    74,402.49x = 102,675.74 × 40,411.55
  4. Step 4: Simplify right side
    74,402.49x = 4,149,285,800.80
  5. Step 5: Solve for x
    x = 4,149,285,800.80/74,402.49
  6. Step 6: Final answer
    x = 55,768.10

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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.