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Finding the Fourth Proportional to 105,757.75, 145,945.70 and 58,011.21

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Solution

The fourth proportional to 105,757.75, 145,945.70 and 58,011.21 is: 80,055.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,757.75 : 145,945.70 = 58,011.21 : x
  2. Step 2: Convert to fraction form
    105,757.75/145,945.70 = 58,011.21/x
  3. Step 3: Cross multiply
    105,757.75x = 145,945.70 × 58,011.21
  4. Step 4: Simplify right side
    105,757.75x = 8,466,486,651.30
  5. Step 5: Solve for x
    x = 8,466,486,651.30/105,757.75
  6. Step 6: Final answer
    x = 80,055.47

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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.