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Finding the Fourth Proportional to 81,393.84, 112,320.44 and 45,582.08

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Solution

The fourth proportional to 81,393.84, 112,320.44 and 45,582.08 is: 62,901.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,393.84 : 112,320.44 = 45,582.08 : x
  2. Step 2: Convert to fraction form
    81,393.84/112,320.44 = 45,582.08/x
  3. Step 3: Cross multiply
    81,393.84x = 112,320.44 × 45,582.08
  4. Step 4: Simplify right side
    81,393.84x = 5,119,799,281.72
  5. Step 5: Solve for x
    x = 5,119,799,281.72/81,393.84
  6. Step 6: Final answer
    x = 62,901.56

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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.