Home / 77,668,843.76-107,185,578.88-42,388,580.64

Finding the Fourth Proportional to 77,668,843.76, 107,185,578.88 and 42,388,580.64

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Solution

The fourth proportional to 77,668,843.76, 107,185,578.88 and 42,388,580.64 is: 58,497,646.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,668,843.76 : 107,185,578.88 = 42,388,580.64 : x
  2. Step 2: Convert to fraction form
    77,668,843.76/107,185,578.88 = 42,388,580.64/x
  3. Step 3: Cross multiply
    77,668,843.76x = 107,185,578.88 × 42,388,580.64
  4. Step 4: Simplify right side
    77,668,843.76x = 4,543,444,553,799,961
  5. Step 5: Solve for x
    x = 4,543,444,553,799,961/77,668,843.76
  6. Step 6: Final answer
    x = 58,497,646.34

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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.