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Finding the Fourth Proportional to 103,624.80, 155,437.18 and 28,744.94

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Solution

The fourth proportional to 103,624.80, 155,437.18 and 28,744.94 is: 43,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,624.80 : 155,437.18 = 28,744.94 : x
  2. Step 2: Convert to fraction form
    103,624.80/155,437.18 = 28,744.94/x
  3. Step 3: Cross multiply
    103,624.80x = 155,437.18 × 28,744.94
  4. Step 4: Simplify right side
    103,624.80x = 4,468,032,412.87
  5. Step 5: Solve for x
    x = 4,468,032,412.87/103,624.80
  6. Step 6: Final answer
    x = 43,117.40

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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.