Home / 53,421.57-80,124.12-21,830.49

Finding the Fourth Proportional to 53,421.57, 80,124.12 and 21,830.49

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Solution

The fourth proportional to 53,421.57, 80,124.12 and 21,830.49 is: 32,742.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,421.57 : 80,124.12 = 21,830.49 : x
  2. Step 2: Convert to fraction form
    53,421.57/80,124.12 = 21,830.49/x
  3. Step 3: Cross multiply
    53,421.57x = 80,124.12 × 21,830.49
  4. Step 4: Simplify right side
    53,421.57x = 1,749,148,800.42
  5. Step 5: Solve for x
    x = 1,749,148,800.42/53,421.57
  6. Step 6: Final answer
    x = 32,742.37

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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.