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Finding the Fourth Proportional to 103,875.49, 155,785.51 and 28,982.47

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Solution

The fourth proportional to 103,875.49, 155,785.51 and 28,982.47 is: 43,465.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,875.49 : 155,785.51 = 28,982.47 : x
  2. Step 2: Convert to fraction form
    103,875.49/155,785.51 = 28,982.47/x
  3. Step 3: Cross multiply
    103,875.49x = 155,785.51 × 28,982.47
  4. Step 4: Simplify right side
    103,875.49x = 4,515,048,808.87
  5. Step 5: Solve for x
    x = 4,515,048,808.87/103,875.49
  6. Step 6: Final answer
    x = 43,465.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.