Home / 53,743.40-80,442.30-28,720.76

Finding the Fourth Proportional to 53,743.40, 80,442.30 and 28,720.76

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Solution

The fourth proportional to 53,743.40, 80,442.30 and 28,720.76 is: 42,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,743.40 : 80,442.30 = 28,720.76 : x
  2. Step 2: Convert to fraction form
    53,743.40/80,442.30 = 28,720.76/x
  3. Step 3: Cross multiply
    53,743.40x = 80,442.30 × 28,720.76
  4. Step 4: Simplify right side
    53,743.40x = 2,310,363,992.15
  5. Step 5: Solve for x
    x = 2,310,363,992.15/53,743.40
  6. Step 6: Final answer
    x = 42,988.79

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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.