Home / 105,484.41-145,568.70-57,740.81

Finding the Fourth Proportional to 105,484.41, 145,568.70 and 57,740.81

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Solution

The fourth proportional to 105,484.41, 145,568.70 and 57,740.81 is: 79,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,484.41 : 145,568.70 = 57,740.81 : x
  2. Step 2: Convert to fraction form
    105,484.41/145,568.70 = 57,740.81/x
  3. Step 3: Cross multiply
    105,484.41x = 145,568.70 × 57,740.81
  4. Step 4: Simplify right side
    105,484.41x = 8,405,253,920.80
  5. Step 5: Solve for x
    x = 8,405,253,920.80/105,484.41
  6. Step 6: Final answer
    x = 79,682.43

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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.