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Finding the Fourth Proportional to 105,791.79, 145,991.53 and 58,045.13

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Solution

The fourth proportional to 105,791.79, 145,991.53 and 58,045.13 is: 80,101.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,791.79 : 145,991.53 = 58,045.13 : x
  2. Step 2: Convert to fraction form
    105,791.79/145,991.53 = 58,045.13/x
  3. Step 3: Cross multiply
    105,791.79x = 145,991.53 × 58,045.13
  4. Step 4: Simplify right side
    105,791.79x = 8,474,097,227.82
  5. Step 5: Solve for x
    x = 8,474,097,227.82/105,791.79
  6. Step 6: Final answer
    x = 80,101.65

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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.