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Finding the Fourth Proportional to 53,358.68, 80,041.15 and 20,079.03

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Solution

The fourth proportional to 53,358.68, 80,041.15 and 20,079.03 is: 30,119.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,358.68 : 80,041.15 = 20,079.03 : x
  2. Step 2: Convert to fraction form
    53,358.68/80,041.15 = 20,079.03/x
  3. Step 3: Cross multiply
    53,358.68x = 80,041.15 × 20,079.03
  4. Step 4: Simplify right side
    53,358.68x = 1,607,148,977.34
  5. Step 5: Solve for x
    x = 1,607,148,977.34/53,358.68
  6. Step 6: Final answer
    x = 30,119.73

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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.