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Finding the Fourth Proportional to 103,433.95, 155,147.84 and 28,558.66

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Solution

The fourth proportional to 103,433.95, 155,147.84 and 28,558.66 is: 42,837.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,433.95 : 155,147.84 = 28,558.66 : x
  2. Step 2: Convert to fraction form
    103,433.95/155,147.84 = 28,558.66/x
  3. Step 3: Cross multiply
    103,433.95x = 155,147.84 × 28,558.66
  4. Step 4: Simplify right side
    103,433.95x = 4,430,814,412.29
  5. Step 5: Solve for x
    x = 4,430,814,412.29/103,433.95
  6. Step 6: Final answer
    x = 42,837.14

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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.