Home / 105,644.16-145,789.11-57,896.49

Finding the Fourth Proportional to 105,644.16, 145,789.11 and 57,896.49

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Solution

The fourth proportional to 105,644.16, 145,789.11 and 57,896.49 is: 79,897.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,644.16 : 145,789.11 = 57,896.49 : x
  2. Step 2: Convert to fraction form
    105,644.16/145,789.11 = 57,896.49/x
  3. Step 3: Cross multiply
    105,644.16x = 145,789.11 × 57,896.49
  4. Step 4: Simplify right side
    105,644.16x = 8,440,677,749.22
  5. Step 5: Solve for x
    x = 8,440,677,749.22/105,644.16
  6. Step 6: Final answer
    x = 79,897.25

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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.