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Finding the Fourth Proportional to 103,655.13, 155,482.65 and 28,775.27

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Solution

The fourth proportional to 103,655.13, 155,482.65 and 28,775.27 is: 43,162.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,655.13 : 155,482.65 = 28,775.27 : x
  2. Step 2: Convert to fraction form
    103,655.13/155,482.65 = 28,775.27/x
  3. Step 3: Cross multiply
    103,655.13x = 155,482.65 × 28,775.27
  4. Step 4: Simplify right side
    103,655.13x = 4,474,055,234.07
  5. Step 5: Solve for x
    x = 4,474,055,234.07/103,655.13
  6. Step 6: Final answer
    x = 43,162.89

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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.