Home / 77,106.12-106,406.64-43,115.84

Finding the Fourth Proportional to 77,106.12, 106,406.64 and 43,115.84

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Solution

The fourth proportional to 77,106.12, 106,406.64 and 43,115.84 is: 59,499.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,106.12 : 106,406.64 = 43,115.84 : x
  2. Step 2: Convert to fraction form
    77,106.12/106,406.64 = 43,115.84/x
  3. Step 3: Cross multiply
    77,106.12x = 106,406.64 × 43,115.84
  4. Step 4: Simplify right side
    77,106.12x = 4,587,811,665.18
  5. Step 5: Solve for x
    x = 4,587,811,665.18/77,106.12
  6. Step 6: Final answer
    x = 59,499.97

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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.