Home / 36,139.80-54,339.30-30,437.40

Finding the Fourth Proportional to 36,139.80, 54,339.30 and 30,437.40

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Solution

The fourth proportional to 36,139.80, 54,339.30 and 30,437.40 is: 45,765.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,139.80 : 54,339.30 = 30,437.40 : x
  2. Step 2: Convert to fraction form
    36,139.80/54,339.30 = 30,437.40/x
  3. Step 3: Cross multiply
    36,139.80x = 54,339.30 × 30,437.40
  4. Step 4: Simplify right side
    36,139.80x = 1,653,947,009.82
  5. Step 5: Solve for x
    x = 1,653,947,009.82/36,139.80
  6. Step 6: Final answer
    x = 45,765.25

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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.