Home / 103,780.64-155,675.06-28,907.33

Finding the Fourth Proportional to 103,780.64, 155,675.06 and 28,907.33

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Solution

The fourth proportional to 103,780.64, 155,675.06 and 28,907.33 is: 43,362.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,780.64 : 155,675.06 = 28,907.33 : x
  2. Step 2: Convert to fraction form
    103,780.64/155,675.06 = 28,907.33/x
  3. Step 3: Cross multiply
    103,780.64x = 155,675.06 × 28,907.33
  4. Step 4: Simplify right side
    103,780.64x = 4,500,150,332.19
  5. Step 5: Solve for x
    x = 4,500,150,332.19/103,780.64
  6. Step 6: Final answer
    x = 43,362.14

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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.