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Finding the Fourth Proportional to 81,788.81, 112,859.94 and 45,484.37

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Solution

The fourth proportional to 81,788.81, 112,859.94 and 45,484.37 is: 62,763.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,788.81 : 112,859.94 = 45,484.37 : x
  2. Step 2: Convert to fraction form
    81,788.81/112,859.94 = 45,484.37/x
  3. Step 3: Cross multiply
    81,788.81x = 112,859.94 × 45,484.37
  4. Step 4: Simplify right side
    81,788.81x = 5,133,363,298.63
  5. Step 5: Solve for x
    x = 5,133,363,298.63/81,788.81
  6. Step 6: Final answer
    x = 62,763.64

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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.