Home / 45,287.87-67,828.35-21,612.04

Finding the Fourth Proportional to 45,287.87, 67,828.35 and 21,612.04

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Solution

The fourth proportional to 45,287.87, 67,828.35 and 21,612.04 is: 32,368.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,287.87 : 67,828.35 = 21,612.04 : x
  2. Step 2: Convert to fraction form
    45,287.87/67,828.35 = 21,612.04/x
  3. Step 3: Cross multiply
    45,287.87x = 67,828.35 × 21,612.04
  4. Step 4: Simplify right side
    45,287.87x = 1,465,909,219.37
  5. Step 5: Solve for x
    x = 1,465,909,219.37/45,287.87
  6. Step 6: Final answer
    x = 32,368.69

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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.