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Finding the Fourth Proportional to 70,791.65, 97,670.48 and 40,159.69

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Solution

The fourth proportional to 70,791.65, 97,670.48 and 40,159.69 is: 55,407.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,791.65 : 97,670.48 = 40,159.69 : x
  2. Step 2: Convert to fraction form
    70,791.65/97,670.48 = 40,159.69/x
  3. Step 3: Cross multiply
    70,791.65x = 97,670.48 × 40,159.69
  4. Step 4: Simplify right side
    70,791.65x = 3,922,415,753.98
  5. Step 5: Solve for x
    x = 3,922,415,753.98/70,791.65
  6. Step 6: Final answer
    x = 55,407.89

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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.