Home / 55,383.95-83,073.20-20,320.88

Finding the Fourth Proportional to 55,383.95, 83,073.20 and 20,320.88

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Solution

The fourth proportional to 55,383.95, 83,073.20 and 20,320.88 is: 30,480.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,383.95 : 83,073.20 = 20,320.88 : x
  2. Step 2: Convert to fraction form
    55,383.95/83,073.20 = 20,320.88/x
  3. Step 3: Cross multiply
    55,383.95x = 83,073.20 × 20,320.88
  4. Step 4: Simplify right side
    55,383.95x = 1,688,120,011.45
  5. Step 5: Solve for x
    x = 1,688,120,011.45/55,383.95
  6. Step 6: Final answer
    x = 30,480.31

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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.