Home / 55,883.20-83,822.40-18,947.20

Finding the Fourth Proportional to 55,883.20, 83,822.40 and 18,947.20

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Solution

The fourth proportional to 55,883.20, 83,822.40 and 18,947.20 is: 28,419.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,883.20 : 83,822.40 = 18,947.20 : x
  2. Step 2: Convert to fraction form
    55,883.20/83,822.40 = 18,947.20/x
  3. Step 3: Cross multiply
    55,883.20x = 83,822.40 × 18,947.20
  4. Step 4: Simplify right side
    55,883.20x = 1,588,199,777.28
  5. Step 5: Solve for x
    x = 1,588,199,777.28/55,883.20
  6. Step 6: Final answer
    x = 28,419.99

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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.