Home / 77,818.40-107,369.88-43,820

Finding the Fourth Proportional to 77,818.40, 107,369.88 and 43,820

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Solution

The fourth proportional to 77,818.40, 107,369.88 and 43,820 is: 60,460.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,818.40 : 107,369.88 = 43,820 : x
  2. Step 2: Convert to fraction form
    77,818.40/107,369.88 = 43,820/x
  3. Step 3: Cross multiply
    77,818.40x = 107,369.88 × 43,820
  4. Step 4: Simplify right side
    77,818.40x = 4,704,948,141.60
  5. Step 5: Solve for x
    x = 4,704,948,141.60/77,818.40
  6. Step 6: Final answer
    x = 60,460.61

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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.