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Finding the Fourth Proportional to 79,216.80, 118,630.80 and 52,778.40

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Solution

The fourth proportional to 79,216.80, 118,630.80 and 52,778.40 is: 79,038.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,216.80 : 118,630.80 = 52,778.40 : x
  2. Step 2: Convert to fraction form
    79,216.80/118,630.80 = 52,778.40/x
  3. Step 3: Cross multiply
    79,216.80x = 118,630.80 × 52,778.40
  4. Step 4: Simplify right side
    79,216.80x = 6,261,143,814.72
  5. Step 5: Solve for x
    x = 6,261,143,814.72/79,216.80
  6. Step 6: Final answer
    x = 79,038.08

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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.