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Finding the Fourth Proportional to 70,661.09, 97,507.72 and 40,446.65

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Solution

The fourth proportional to 70,661.09, 97,507.72 and 40,446.65 is: 55,813.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,661.09 : 97,507.72 = 40,446.65 : x
  2. Step 2: Convert to fraction form
    70,661.09/97,507.72 = 40,446.65/x
  3. Step 3: Cross multiply
    70,661.09x = 97,507.72 × 40,446.65
  4. Step 4: Simplify right side
    70,661.09x = 3,943,860,917.47
  5. Step 5: Solve for x
    x = 3,943,860,917.47/70,661.09
  6. Step 6: Final answer
    x = 55,813.76

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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.