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Finding the Fourth Proportional to 35,412.93, 48,878.15 and 20,305.32

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Solution

The fourth proportional to 35,412.93, 48,878.15 and 20,305.32 is: 28,026.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,412.93 : 48,878.15 = 20,305.32 : x
  2. Step 2: Convert to fraction form
    35,412.93/48,878.15 = 20,305.32/x
  3. Step 3: Cross multiply
    35,412.93x = 48,878.15 × 20,305.32
  4. Step 4: Simplify right side
    35,412.93x = 992,486,375.23
  5. Step 5: Solve for x
    x = 992,486,375.23/35,412.93
  6. Step 6: Final answer
    x = 28,026.10

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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.