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Finding the Fourth Proportional to 35,479.54, 48,965.05 and 20,374.18

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Solution

The fourth proportional to 35,479.54, 48,965.05 and 20,374.18 is: 28,118.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,479.54 : 48,965.05 = 20,374.18 : x
  2. Step 2: Convert to fraction form
    35,479.54/48,965.05 = 20,374.18/x
  3. Step 3: Cross multiply
    35,479.54x = 48,965.05 × 20,374.18
  4. Step 4: Simplify right side
    35,479.54x = 997,622,742.41
  5. Step 5: Solve for x
    x = 997,622,742.41/35,479.54
  6. Step 6: Final answer
    x = 28,118.25

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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.