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Finding the Fourth Proportional to 74,871.66, 103,322.11 and 40,880.04

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Solution

The fourth proportional to 74,871.66, 103,322.11 and 40,880.04 is: 56,414.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,871.66 : 103,322.11 = 40,880.04 : x
  2. Step 2: Convert to fraction form
    74,871.66/103,322.11 = 40,880.04/x
  3. Step 3: Cross multiply
    74,871.66x = 103,322.11 × 40,880.04
  4. Step 4: Simplify right side
    74,871.66x = 4,223,812,100.38
  5. Step 5: Solve for x
    x = 4,223,812,100.38/74,871.66
  6. Step 6: Final answer
    x = 56,414.03

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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.