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Finding the Fourth Proportional to 103,483.68, 155,222.34 and 28,608.36

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Solution

The fourth proportional to 103,483.68, 155,222.34 and 28,608.36 is: 42,911.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,483.68 : 155,222.34 = 28,608.36 : x
  2. Step 2: Convert to fraction form
    103,483.68/155,222.34 = 28,608.36/x
  3. Step 3: Cross multiply
    103,483.68x = 155,222.34 × 28,608.36
  4. Step 4: Simplify right side
    103,483.68x = 4,440,656,582.76
  5. Step 5: Solve for x
    x = 4,440,656,582.76/103,483.68
  6. Step 6: Final answer
    x = 42,911.66

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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.