Home / 30,372-45,581.49-21,077.25

Finding the Fourth Proportional to 30,372, 45,581.49 and 21,077.25

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Solution

The fourth proportional to 30,372, 45,581.49 and 21,077.25 is: 31,632.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,372 : 45,581.49 = 21,077.25 : x
  2. Step 2: Convert to fraction form
    30,372/45,581.49 = 21,077.25/x
  3. Step 3: Cross multiply
    30,372x = 45,581.49 × 21,077.25
  4. Step 4: Simplify right side
    30,372x = 960,732,460.10
  5. Step 5: Solve for x
    x = 960,732,460.10/30,372
  6. Step 6: Final answer
    x = 31,632.18

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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.