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Finding the Fourth Proportional to 70,491.51, 97,269.29 and 40,278.79

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Solution

The fourth proportional to 70,491.51, 97,269.29 and 40,278.79 is: 55,579.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,491.51 : 97,269.29 = 40,278.79 : x
  2. Step 2: Convert to fraction form
    70,491.51/97,269.29 = 40,278.79/x
  3. Step 3: Cross multiply
    70,491.51x = 97,269.29 × 40,278.79
  4. Step 4: Simplify right side
    70,491.51x = 3,917,889,305.36
  5. Step 5: Solve for x
    x = 3,917,889,305.36/70,491.51
  6. Step 6: Final answer
    x = 55,579.59

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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.