Home / 105,633.88-145,778.30-57,886.81

Finding the Fourth Proportional to 105,633.88, 145,778.30 and 57,886.81

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Solution

The fourth proportional to 105,633.88, 145,778.30 and 57,886.81 is: 79,885.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,633.88 : 145,778.30 = 57,886.81 : x
  2. Step 2: Convert to fraction form
    105,633.88/145,778.30 = 57,886.81/x
  3. Step 3: Cross multiply
    105,633.88x = 145,778.30 × 57,886.81
  4. Step 4: Simplify right side
    105,633.88x = 8,438,640,754.22
  5. Step 5: Solve for x
    x = 8,438,640,754.22/105,633.88
  6. Step 6: Final answer
    x = 79,885.74

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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.