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Finding the Fourth Proportional to 43,005.60, 64,495.60 and 16,695.20

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Solution

The fourth proportional to 43,005.60, 64,495.60 and 16,695.20 is: 25,037.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,005.60 : 64,495.60 = 16,695.20 : x
  2. Step 2: Convert to fraction form
    43,005.60/64,495.60 = 16,695.20/x
  3. Step 3: Cross multiply
    43,005.60x = 64,495.60 × 16,695.20
  4. Step 4: Simplify right side
    43,005.60x = 1,076,766,941.12
  5. Step 5: Solve for x
    x = 1,076,766,941.12/43,005.60
  6. Step 6: Final answer
    x = 25,037.83

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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.