Home / 53,972.72-80,965.84-28,978.40

Finding the Fourth Proportional to 53,972.72, 80,965.84 and 28,978.40

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Solution

The fourth proportional to 53,972.72, 80,965.84 and 28,978.40 is: 43,471.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,972.72 : 80,965.84 = 28,978.40 : x
  2. Step 2: Convert to fraction form
    53,972.72/80,965.84 = 28,978.40/x
  3. Step 3: Cross multiply
    53,972.72x = 80,965.84 × 28,978.40
  4. Step 4: Simplify right side
    53,972.72x = 2,346,260,497.86
  5. Step 5: Solve for x
    x = 2,346,260,497.86/53,972.72
  6. Step 6: Final answer
    x = 43,471.23

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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.