Home / 78,421,260.42-117,606,933.90-25,889,150.70

Finding the Fourth Proportional to 78,421,260.42, 117,606,933.90 and 25,889,150.70

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Solution

The fourth proportional to 78,421,260.42, 117,606,933.90 and 25,889,150.70 is: 38,825,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,421,260.42 : 117,606,933.90 = 25,889,150.70 : x
  2. Step 2: Convert to fraction form
    78,421,260.42/117,606,933.90 = 25,889,150.70/x
  3. Step 3: Cross multiply
    78,421,260.42x = 117,606,933.90 × 25,889,150.70
  4. Step 4: Simplify right side
    78,421,260.42x = 3,044,743,635,102,039
  5. Step 5: Solve for x
    x = 3,044,743,635,102,039/78,421,260.42
  6. Step 6: Final answer
    x = 38,825,487.10

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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.