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Finding the Fourth Proportional to 78,473.68, 108,291.40 and 44,485.30

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Solution

The fourth proportional to 78,473.68, 108,291.40 and 44,485.30 is: 61,388.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,473.68 : 108,291.40 = 44,485.30 : x
  2. Step 2: Convert to fraction form
    78,473.68/108,291.40 = 44,485.30/x
  3. Step 3: Cross multiply
    78,473.68x = 108,291.40 × 44,485.30
  4. Step 4: Simplify right side
    78,473.68x = 4,817,375,416.42
  5. Step 5: Solve for x
    x = 4,817,375,416.42/78,473.68
  6. Step 6: Final answer
    x = 61,388.42

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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.