Home / 98,288.35-135,642.81-55,281.40

Finding the Fourth Proportional to 98,288.35, 135,642.81 and 55,281.40

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Solution

The fourth proportional to 98,288.35, 135,642.81 and 55,281.40 is: 76,291.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,288.35 : 135,642.81 = 55,281.40 : x
  2. Step 2: Convert to fraction form
    98,288.35/135,642.81 = 55,281.40/x
  3. Step 3: Cross multiply
    98,288.35x = 135,642.81 × 55,281.40
  4. Step 4: Simplify right side
    98,288.35x = 7,498,524,436.73
  5. Step 5: Solve for x
    x = 7,498,524,436.73/98,288.35
  6. Step 6: Final answer
    x = 76,291.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.