Home / 75,181.88-112,729.07-28,438.40

Finding the Fourth Proportional to 75,181.88, 112,729.07 and 28,438.40

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Solution

The fourth proportional to 75,181.88, 112,729.07 and 28,438.40 is: 42,641.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,181.88 : 112,729.07 = 28,438.40 : x
  2. Step 2: Convert to fraction form
    75,181.88/112,729.07 = 28,438.40/x
  3. Step 3: Cross multiply
    75,181.88x = 112,729.07 × 28,438.40
  4. Step 4: Simplify right side
    75,181.88x = 3,205,833,678.45
  5. Step 5: Solve for x
    x = 3,205,833,678.45/75,181.88
  6. Step 6: Final answer
    x = 42,641.04

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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.