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Finding the Fourth Proportional to 77,571.60, 107,062.74 and 45,738.60

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Solution

The fourth proportional to 77,571.60, 107,062.74 and 45,738.60 is: 63,127.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,571.60 : 107,062.74 = 45,738.60 : x
  2. Step 2: Convert to fraction form
    77,571.60/107,062.74 = 45,738.60/x
  3. Step 3: Cross multiply
    77,571.60x = 107,062.74 × 45,738.60
  4. Step 4: Simplify right side
    77,571.60x = 4,896,899,839.76
  5. Step 5: Solve for x
    x = 4,896,899,839.76/77,571.60
  6. Step 6: Final answer
    x = 63,127.48

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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.