Home / 78,964.09-118,433.15-28,352.63

Finding the Fourth Proportional to 78,964.09, 118,433.15 and 28,352.63

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Solution

The fourth proportional to 78,964.09, 118,433.15 and 28,352.63 is: 42,524.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,964.09 : 118,433.15 = 28,352.63 : x
  2. Step 2: Convert to fraction form
    78,964.09/118,433.15 = 28,352.63/x
  3. Step 3: Cross multiply
    78,964.09x = 118,433.15 × 28,352.63
  4. Step 4: Simplify right side
    78,964.09x = 3,357,891,648.65
  5. Step 5: Solve for x
    x = 3,357,891,648.65/78,964.09
  6. Step 6: Final answer
    x = 42,524.29

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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.