Home / 105,450.89-145,522.21-57,704.24

Finding the Fourth Proportional to 105,450.89, 145,522.21 and 57,704.24

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Solution

The fourth proportional to 105,450.89, 145,522.21 and 57,704.24 is: 79,631.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,450.89 : 145,522.21 = 57,704.24 : x
  2. Step 2: Convert to fraction form
    105,450.89/145,522.21 = 57,704.24/x
  3. Step 3: Cross multiply
    105,450.89x = 145,522.21 × 57,704.24
  4. Step 4: Simplify right side
    105,450.89x = 8,397,248,531.17
  5. Step 5: Solve for x
    x = 8,397,248,531.17/105,450.89
  6. Step 6: Final answer
    x = 79,631.84

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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.