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Finding the Fourth Proportional to 104,208.50, 156,208.80 and 40,989.08

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Solution

The fourth proportional to 104,208.50, 156,208.80 and 40,989.08 is: 61,442.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,208.50 : 156,208.80 = 40,989.08 : x
  2. Step 2: Convert to fraction form
    104,208.50/156,208.80 = 40,989.08/x
  3. Step 3: Cross multiply
    104,208.50x = 156,208.80 × 40,989.08
  4. Step 4: Simplify right side
    104,208.50x = 6,402,854,999.90
  5. Step 5: Solve for x
    x = 6,402,854,999.90/104,208.50
  6. Step 6: Final answer
    x = 61,442.73

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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.