Home / 105,486.41-145,571.46-57,742.81

Finding the Fourth Proportional to 105,486.41, 145,571.46 and 57,742.81

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Solution

The fourth proportional to 105,486.41, 145,571.46 and 57,742.81 is: 79,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,486.41 : 145,571.46 = 57,742.81 : x
  2. Step 2: Convert to fraction form
    105,486.41/145,571.46 = 57,742.81/x
  3. Step 3: Cross multiply
    105,486.41x = 145,571.46 × 57,742.81
  4. Step 4: Simplify right side
    105,486.41x = 8,405,705,156.20
  5. Step 5: Solve for x
    x = 8,405,705,156.20/105,486.41
  6. Step 6: Final answer
    x = 79,685.20

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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.