Home / 77,668,749.90-107,185,449.28-42,388,486.90

Finding the Fourth Proportional to 77,668,749.90, 107,185,449.28 and 42,388,486.90

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Solution

The fourth proportional to 77,668,749.90, 107,185,449.28 and 42,388,486.90 is: 58,497,516.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,668,749.90 : 107,185,449.28 = 42,388,486.90 : x
  2. Step 2: Convert to fraction form
    77,668,749.90/107,185,449.28 = 42,388,486.90/x
  3. Step 3: Cross multiply
    77,668,749.90x = 107,185,449.28 × 42,388,486.90
  4. Step 4: Simplify right side
    77,668,749.90x = 4,543,429,012,675,894
  5. Step 5: Solve for x
    x = 4,543,429,012,675,894/77,668,749.90
  6. Step 6: Final answer
    x = 58,497,516.94

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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.