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Finding the Fourth Proportional to 78,763.90, 108,697.05 and 44,778.12

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Solution

The fourth proportional to 78,763.90, 108,697.05 and 44,778.12 is: 61,795.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,763.90 : 108,697.05 = 44,778.12 : x
  2. Step 2: Convert to fraction form
    78,763.90/108,697.05 = 44,778.12/x
  3. Step 3: Cross multiply
    78,763.90x = 108,697.05 × 44,778.12
  4. Step 4: Simplify right side
    78,763.90x = 4,867,249,548.55
  5. Step 5: Solve for x
    x = 4,867,249,548.55/78,763.90
  6. Step 6: Final answer
    x = 61,795.44

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1.5x scale

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.