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Finding the Fourth Proportional to 103,309.63, 154,944.04 and 28,410.45

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Solution

The fourth proportional to 103,309.63, 154,944.04 and 28,410.45 is: 42,610.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,309.63 : 154,944.04 = 28,410.45 : x
  2. Step 2: Convert to fraction form
    103,309.63/154,944.04 = 28,410.45/x
  3. Step 3: Cross multiply
    103,309.63x = 154,944.04 × 28,410.45
  4. Step 4: Simplify right side
    103,309.63x = 4,402,029,302.42
  5. Step 5: Solve for x
    x = 4,402,029,302.42/103,309.63
  6. Step 6: Final answer
    x = 42,610.06

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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.