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Finding the Fourth Proportional to 78,892.40, 108,872.12 and 44,903.50

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Solution

The fourth proportional to 78,892.40, 108,872.12 and 44,903.50 is: 61,967.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,892.40 : 108,872.12 = 44,903.50 : x
  2. Step 2: Convert to fraction form
    78,892.40/108,872.12 = 44,903.50/x
  3. Step 3: Cross multiply
    78,892.40x = 108,872.12 × 44,903.50
  4. Step 4: Simplify right side
    78,892.40x = 4,888,739,240.42
  5. Step 5: Solve for x
    x = 4,888,739,240.42/78,892.40
  6. Step 6: Final answer
    x = 61,967.18

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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.