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Finding the Fourth Proportional to 77,350.47, 106,742.79 and 43,364.49

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Solution

The fourth proportional to 77,350.47, 106,742.79 and 43,364.49 is: 59,842.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,350.47 : 106,742.79 = 43,364.49 : x
  2. Step 2: Convert to fraction form
    77,350.47/106,742.79 = 43,364.49/x
  3. Step 3: Cross multiply
    77,350.47x = 106,742.79 × 43,364.49
  4. Step 4: Simplify right side
    77,350.47x = 4,628,846,649.53
  5. Step 5: Solve for x
    x = 4,628,846,649.53/77,350.47
  6. Step 6: Final answer
    x = 59,842.51

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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.