Home / 77,515.39-106,897.75-50,680.90

Finding the Fourth Proportional to 77,515.39, 106,897.75 and 50,680.90

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Solution

The fourth proportional to 77,515.39, 106,897.75 and 50,680.90 is: 69,891.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,515.39 : 106,897.75 = 50,680.90 : x
  2. Step 2: Convert to fraction form
    77,515.39/106,897.75 = 50,680.90/x
  3. Step 3: Cross multiply
    77,515.39x = 106,897.75 × 50,680.90
  4. Step 4: Simplify right side
    77,515.39x = 5,417,674,177.98
  5. Step 5: Solve for x
    x = 5,417,674,177.98/77,515.39
  6. Step 6: Final answer
    x = 69,891.59

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1.5x scale

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.