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Finding the Fourth Proportional to 103,782.80, 155,652.60 and 28,883.60

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Solution

The fourth proportional to 103,782.80, 155,652.60 and 28,883.60 is: 43,319.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,782.80 : 155,652.60 = 28,883.60 : x
  2. Step 2: Convert to fraction form
    103,782.80/155,652.60 = 28,883.60/x
  3. Step 3: Cross multiply
    103,782.80x = 155,652.60 × 28,883.60
  4. Step 4: Simplify right side
    103,782.80x = 4,495,807,437.36
  5. Step 5: Solve for x
    x = 4,495,807,437.36/103,782.80
  6. Step 6: Final answer
    x = 43,319.39

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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.