Home / 105,528.38-145,622.49-57,782.30

Finding the Fourth Proportional to 105,528.38, 145,622.49 and 57,782.30

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Solution

The fourth proportional to 105,528.38, 145,622.49 and 57,782.30 is: 79,735.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,528.38 : 145,622.49 = 57,782.30 : x
  2. Step 2: Convert to fraction form
    105,528.38/145,622.49 = 57,782.30/x
  3. Step 3: Cross multiply
    105,528.38x = 145,622.49 × 57,782.30
  4. Step 4: Simplify right side
    105,528.38x = 8,414,402,403.93
  5. Step 5: Solve for x
    x = 8,414,402,403.93/105,528.38
  6. Step 6: Final answer
    x = 79,735.92

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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.