Home / 105,505.53-145,600.91-57,763.32

Finding the Fourth Proportional to 105,505.53, 145,600.91 and 57,763.32

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Solution

The fourth proportional to 105,505.53, 145,600.91 and 57,763.32 is: 79,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,505.53 : 145,600.91 = 57,763.32 : x
  2. Step 2: Convert to fraction form
    105,505.53/145,600.91 = 57,763.32/x
  3. Step 3: Cross multiply
    105,505.53x = 145,600.91 × 57,763.32
  4. Step 4: Simplify right side
    105,505.53x = 8,410,391,956.62
  5. Step 5: Solve for x
    x = 8,410,391,956.62/105,505.53
  6. Step 6: Final answer
    x = 79,715.18

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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.