Home / 77,890.69-107,418.58-51,023.40

Finding the Fourth Proportional to 77,890.69, 107,418.58 and 51,023.40

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Solution

The fourth proportional to 77,890.69, 107,418.58 and 51,023.40 is: 70,366.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,890.69 : 107,418.58 = 51,023.40 : x
  2. Step 2: Convert to fraction form
    77,890.69/107,418.58 = 51,023.40/x
  3. Step 3: Cross multiply
    77,890.69x = 107,418.58 × 51,023.40
  4. Step 4: Simplify right side
    77,890.69x = 5,480,861,174.77
  5. Step 5: Solve for x
    x = 5,480,861,174.77/77,890.69
  6. Step 6: Final answer
    x = 70,366.06

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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.