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Finding the Fourth Proportional to 35,485.71, 48,968.63 and 20,367.74

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Solution

The fourth proportional to 35,485.71, 48,968.63 and 20,367.74 is: 28,106.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,485.71 : 48,968.63 = 20,367.74 : x
  2. Step 2: Convert to fraction form
    35,485.71/48,968.63 = 20,367.74/x
  3. Step 3: Cross multiply
    35,485.71x = 48,968.63 × 20,367.74
  4. Step 4: Simplify right side
    35,485.71x = 997,380,079.15
  5. Step 5: Solve for x
    x = 997,380,079.15/35,485.71
  6. Step 6: Final answer
    x = 28,106.53

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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.