Home / 77,985,629.76-107,623,532.31-43,178,320.68

Finding the Fourth Proportional to 77,985,629.76, 107,623,532.31 and 43,178,320.68

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Solution

The fourth proportional to 77,985,629.76, 107,623,532.31 and 43,178,320.68 is: 59,587,944.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,985,629.76 : 107,623,532.31 = 43,178,320.68 : x
  2. Step 2: Convert to fraction form
    77,985,629.76/107,623,532.31 = 43,178,320.68/x
  3. Step 3: Cross multiply
    77,985,629.76x = 107,623,532.31 × 43,178,320.68
  4. Step 4: Simplify right side
    77,985,629.76x = 4,647,003,390,795,521
  5. Step 5: Solve for x
    x = 4,647,003,390,795,521/77,985,629.76
  6. Step 6: Final answer
    x = 59,587,944.66

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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.