Home / 30,077.96-45,132.30-20,089.51

Finding the Fourth Proportional to 30,077.96, 45,132.30 and 20,089.51

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Solution

The fourth proportional to 30,077.96, 45,132.30 and 20,089.51 is: 30,144.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,077.96 : 45,132.30 = 20,089.51 : x
  2. Step 2: Convert to fraction form
    30,077.96/45,132.30 = 20,089.51/x
  3. Step 3: Cross multiply
    30,077.96x = 45,132.30 × 20,089.51
  4. Step 4: Simplify right side
    30,077.96x = 906,685,679.34
  5. Step 5: Solve for x
    x = 906,685,679.34/30,077.96
  6. Step 6: Final answer
    x = 30,144.53

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1.5x scale

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.