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Finding the Fourth Proportional to 77,959.07, 107,600.21 and 49,260.51

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Solution

The fourth proportional to 77,959.07, 107,600.21 and 49,260.51 is: 67,990.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,959.07 : 107,600.21 = 49,260.51 : x
  2. Step 2: Convert to fraction form
    77,959.07/107,600.21 = 49,260.51/x
  3. Step 3: Cross multiply
    77,959.07x = 107,600.21 × 49,260.51
  4. Step 4: Simplify right side
    77,959.07x = 5,300,441,220.71
  5. Step 5: Solve for x
    x = 5,300,441,220.71/77,959.07
  6. Step 6: Final answer
    x = 67,990.05

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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.