Home / 77,979.24-107,611.60-42,169.50

Finding the Fourth Proportional to 77,979.24, 107,611.60 and 42,169.50

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Solution

The fourth proportional to 77,979.24, 107,611.60 and 42,169.50 is: 58,194.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,979.24 : 107,611.60 = 42,169.50 : x
  2. Step 2: Convert to fraction form
    77,979.24/107,611.60 = 42,169.50/x
  3. Step 3: Cross multiply
    77,979.24x = 107,611.60 × 42,169.50
  4. Step 4: Simplify right side
    77,979.24x = 4,537,927,260.78
  5. Step 5: Solve for x
    x = 4,537,927,260.78/77,979.24
  6. Step 6: Final answer
    x = 58,194.04

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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.