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Finding the Fourth Proportional to 79,784.64, 110,071.94 and 45,780.84

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Solution

The fourth proportional to 79,784.64, 110,071.94 and 45,780.84 is: 63,159.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,784.64 : 110,071.94 = 45,780.84 : x
  2. Step 2: Convert to fraction form
    79,784.64/110,071.94 = 45,780.84/x
  3. Step 3: Cross multiply
    79,784.64x = 110,071.94 × 45,780.84
  4. Step 4: Simplify right side
    79,784.64x = 5,039,185,873.63
  5. Step 5: Solve for x
    x = 5,039,185,873.63/79,784.64
  6. Step 6: Final answer
    x = 63,159.85

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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.