Home / 74,412.69-111,624.75-21,103.74

Finding the Fourth Proportional to 74,412.69, 111,624.75 and 21,103.74

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Solution

The fourth proportional to 74,412.69, 111,624.75 and 21,103.74 is: 31,657.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,412.69 : 111,624.75 = 21,103.74 : x
  2. Step 2: Convert to fraction form
    74,412.69/111,624.75 = 21,103.74/x
  3. Step 3: Cross multiply
    74,412.69x = 111,624.75 × 21,103.74
  4. Step 4: Simplify right side
    74,412.69x = 2,355,699,701.57
  5. Step 5: Solve for x
    x = 2,355,699,701.57/74,412.69
  6. Step 6: Final answer
    x = 31,657.23

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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.