Home / 77,668,770.72-107,185,477.92-42,388,507.68

Finding the Fourth Proportional to 77,668,770.72, 107,185,477.92 and 42,388,507.68

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Solution

The fourth proportional to 77,668,770.72, 107,185,477.92 and 42,388,507.68 is: 58,497,545.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,668,770.72 : 107,185,477.92 = 42,388,507.68 : x
  2. Step 2: Convert to fraction form
    77,668,770.72/107,185,477.92 = 42,388,507.68/x
  3. Step 3: Cross multiply
    77,668,770.72x = 107,185,477.92 × 42,388,507.68
  4. Step 4: Simplify right side
    77,668,770.72x = 4,543,432,453,996,390
  5. Step 5: Solve for x
    x = 4,543,432,453,996,390/77,668,770.72
  6. Step 6: Final answer
    x = 58,497,545.56

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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.