Home / 53,780.40-80,670.60-18,695.40

Finding the Fourth Proportional to 53,780.40, 80,670.60 and 18,695.40

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Solution

The fourth proportional to 53,780.40, 80,670.60 and 18,695.40 is: 28,043.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,780.40 : 80,670.60 = 18,695.40 : x
  2. Step 2: Convert to fraction form
    53,780.40/80,670.60 = 18,695.40/x
  3. Step 3: Cross multiply
    53,780.40x = 80,670.60 × 18,695.40
  4. Step 4: Simplify right side
    53,780.40x = 1,508,169,135.24
  5. Step 5: Solve for x
    x = 1,508,169,135.24/53,780.40
  6. Step 6: Final answer
    x = 28,043.10

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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.