Home / 74,788.20-103,205.91-42,959.15

Finding the Fourth Proportional to 74,788.20, 103,205.91 and 42,959.15

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Solution

The fourth proportional to 74,788.20, 103,205.91 and 42,959.15 is: 59,282.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,788.20 : 103,205.91 = 42,959.15 : x
  2. Step 2: Convert to fraction form
    74,788.20/103,205.91 = 42,959.15/x
  3. Step 3: Cross multiply
    74,788.20x = 103,205.91 × 42,959.15
  4. Step 4: Simplify right side
    74,788.20x = 4,433,638,168.58
  5. Step 5: Solve for x
    x = 4,433,638,168.58/74,788.20
  6. Step 6: Final answer
    x = 59,282.59

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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.