Home / 77,390.26-115,929.86-40,376.50

Finding the Fourth Proportional to 77,390.26, 115,929.86 and 40,376.50

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Solution

The fourth proportional to 77,390.26, 115,929.86 and 40,376.50 is: 60,483.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,390.26 : 115,929.86 = 40,376.50 : x
  2. Step 2: Convert to fraction form
    77,390.26/115,929.86 = 40,376.50/x
  3. Step 3: Cross multiply
    77,390.26x = 115,929.86 × 40,376.50
  4. Step 4: Simplify right side
    77,390.26x = 4,680,841,992.29
  5. Step 5: Solve for x
    x = 4,680,841,992.29/77,390.26
  6. Step 6: Final answer
    x = 60,483.61

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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.