Home / 53,431.40-80,147.10-20,152.55

Finding the Fourth Proportional to 53,431.40, 80,147.10 and 20,152.55

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Solution

The fourth proportional to 53,431.40, 80,147.10 and 20,152.55 is: 30,228.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,431.40 : 80,147.10 = 20,152.55 : x
  2. Step 2: Convert to fraction form
    53,431.40/80,147.10 = 20,152.55/x
  3. Step 3: Cross multiply
    53,431.40x = 80,147.10 × 20,152.55
  4. Step 4: Simplify right side
    53,431.40x = 1,615,168,440.11
  5. Step 5: Solve for x
    x = 1,615,168,440.11/53,431.40
  6. Step 6: Final answer
    x = 30,228.83

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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.