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Finding the Fourth Proportional to 81,484.74, 112,443.12 and 45,183.48

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Solution

The fourth proportional to 81,484.74, 112,443.12 and 45,183.48 is: 62,349.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,484.74 : 112,443.12 = 45,183.48 : x
  2. Step 2: Convert to fraction form
    81,484.74/112,443.12 = 45,183.48/x
  3. Step 3: Cross multiply
    81,484.74x = 112,443.12 × 45,183.48
  4. Step 4: Simplify right side
    81,484.74x = 5,080,571,463.66
  5. Step 5: Solve for x
    x = 5,080,571,463.66/81,484.74
  6. Step 6: Final answer
    x = 62,349.97

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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.