Home / 83,740.45-115,566.98-47,929.64

Finding the Fourth Proportional to 83,740.45, 115,566.98 and 47,929.64

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Solution

The fourth proportional to 83,740.45, 115,566.98 and 47,929.64 is: 66,145.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,740.45 : 115,566.98 = 47,929.64 : x
  2. Step 2: Convert to fraction form
    83,740.45/115,566.98 = 47,929.64/x
  3. Step 3: Cross multiply
    83,740.45x = 115,566.98 × 47,929.64
  4. Step 4: Simplify right side
    83,740.45x = 5,539,083,530.43
  5. Step 5: Solve for x
    x = 5,539,083,530.43/83,740.45
  6. Step 6: Final answer
    x = 66,145.86

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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.