Home / 105,361.46-145,399.96-57,613.78

Finding the Fourth Proportional to 105,361.46, 145,399.96 and 57,613.78

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Solution

The fourth proportional to 105,361.46, 145,399.96 and 57,613.78 is: 79,507.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,361.46 : 145,399.96 = 57,613.78 : x
  2. Step 2: Convert to fraction form
    105,361.46/145,399.96 = 57,613.78/x
  3. Step 3: Cross multiply
    105,361.46x = 145,399.96 × 57,613.78
  4. Step 4: Simplify right side
    105,361.46x = 8,377,041,561.22
  5. Step 5: Solve for x
    x = 8,377,041,561.22/105,361.46
  6. Step 6: Final answer
    x = 79,507.65

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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.