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Finding the Fourth Proportional to 105,573.45, 145,691.37 and 57,826.92

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Solution

The fourth proportional to 105,573.45, 145,691.37 and 57,826.92 is: 79,801.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,573.45 : 145,691.37 = 57,826.92 : x
  2. Step 2: Convert to fraction form
    105,573.45/145,691.37 = 57,826.92/x
  3. Step 3: Cross multiply
    105,573.45x = 145,691.37 × 57,826.92
  4. Step 4: Simplify right side
    105,573.45x = 8,424,883,197.68
  5. Step 5: Solve for x
    x = 8,424,883,197.68/105,573.45
  6. Step 6: Final answer
    x = 79,801.15

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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.