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Finding the Fourth Proportional to 78,281.58, 108,038.76 and 43,839.44

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Solution

The fourth proportional to 78,281.58, 108,038.76 and 43,839.44 is: 60,504.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,281.58 : 108,038.76 = 43,839.44 : x
  2. Step 2: Convert to fraction form
    78,281.58/108,038.76 = 43,839.44/x
  3. Step 3: Cross multiply
    78,281.58x = 108,038.76 × 43,839.44
  4. Step 4: Simplify right side
    78,281.58x = 4,736,358,196.50
  5. Step 5: Solve for x
    x = 4,736,358,196.50/78,281.58
  6. Step 6: Final answer
    x = 60,504.12

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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.