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Finding the Fourth Proportional to 78,118.90, 117,100.59 and 44,798.74

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Solution

The fourth proportional to 78,118.90, 117,100.59 and 44,798.74 is: 67,153.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,118.90 : 117,100.59 = 44,798.74 : x
  2. Step 2: Convert to fraction form
    78,118.90/117,100.59 = 44,798.74/x
  3. Step 3: Cross multiply
    78,118.90x = 117,100.59 × 44,798.74
  4. Step 4: Simplify right side
    78,118.90x = 5,245,958,885.26
  5. Step 5: Solve for x
    x = 5,245,958,885.26/78,118.90
  6. Step 6: Final answer
    x = 67,153.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.