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Finding the Fourth Proportional to 35,252.64, 48,641.04 and 20,340

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Solution

The fourth proportional to 35,252.64, 48,641.04 and 20,340 is: 28,064.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,252.64 : 48,641.04 = 20,340 : x
  2. Step 2: Convert to fraction form
    35,252.64/48,641.04 = 20,340/x
  3. Step 3: Cross multiply
    35,252.64x = 48,641.04 × 20,340
  4. Step 4: Simplify right side
    35,252.64x = 989,358,753.60
  5. Step 5: Solve for x
    x = 989,358,753.60/35,252.64
  6. Step 6: Final answer
    x = 28,064.81

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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.