Home / 76,874,522.48-115,340,684.28-45,768,128.65

Finding the Fourth Proportional to 76,874,522.48, 115,340,684.28 and 45,768,128.65

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Solution

The fourth proportional to 76,874,522.48, 115,340,684.28 and 45,768,128.65 is: 68,669,399.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,874,522.48 : 115,340,684.28 = 45,768,128.65 : x
  2. Step 2: Convert to fraction form
    76,874,522.48/115,340,684.28 = 45,768,128.65/x
  3. Step 3: Cross multiply
    76,874,522.48x = 115,340,684.28 × 45,768,128.65
  4. Step 4: Simplify right side
    76,874,522.48x = 5,278,927,276,129,370
  5. Step 5: Solve for x
    x = 5,278,927,276,129,370/76,874,522.48
  6. Step 6: Final answer
    x = 68,669,399.25

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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.