Home / 77,669,890.20-107,187,017.04-42,389,620.92

Finding the Fourth Proportional to 77,669,890.20, 107,187,017.04 and 42,389,620.92

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Solution

The fourth proportional to 77,669,890.20, 107,187,017.04 and 42,389,620.92 is: 58,499,078.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,669,890.20 : 107,187,017.04 = 42,389,620.92 : x
  2. Step 2: Convert to fraction form
    77,669,890.20/107,187,017.04 = 42,389,620.92/x
  3. Step 3: Cross multiply
    77,669,890.20x = 107,187,017.04 × 42,389,620.92
  4. Step 4: Simplify right side
    77,669,890.20x = 4,543,617,019,871,181
  5. Step 5: Solve for x
    x = 4,543,617,019,871,181/77,669,890.20
  6. Step 6: Final answer
    x = 58,499,078.71

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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.