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Finding the Fourth Proportional to 49,603.68, 68,458.68 and 28,386

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Solution

The fourth proportional to 49,603.68, 68,458.68 and 28,386 is: 39,175.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,603.68 : 68,458.68 = 28,386 : x
  2. Step 2: Convert to fraction form
    49,603.68/68,458.68 = 28,386/x
  3. Step 3: Cross multiply
    49,603.68x = 68,458.68 × 28,386
  4. Step 4: Simplify right side
    49,603.68x = 1,943,268,090.48
  5. Step 5: Solve for x
    x = 1,943,268,090.48/49,603.68
  6. Step 6: Final answer
    x = 39,175.89

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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.