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Finding the Fourth Proportional to 103,289.65, 154,922.17 and 28,417.41

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Solution

The fourth proportional to 103,289.65, 154,922.17 and 28,417.41 is: 42,622.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,289.65 : 154,922.17 = 28,417.41 : x
  2. Step 2: Convert to fraction form
    103,289.65/154,922.17 = 28,417.41/x
  3. Step 3: Cross multiply
    103,289.65x = 154,922.17 × 28,417.41
  4. Step 4: Simplify right side
    103,289.65x = 4,402,486,822.98
  5. Step 5: Solve for x
    x = 4,402,486,822.98/103,289.65
  6. Step 6: Final answer
    x = 42,622.73

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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.