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Finding the Fourth Proportional to 80,548, 111,156.24 and 45,220

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Solution

The fourth proportional to 80,548, 111,156.24 and 45,220 is: 62,403.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,548 : 111,156.24 = 45,220 : x
  2. Step 2: Convert to fraction form
    80,548/111,156.24 = 45,220/x
  3. Step 3: Cross multiply
    80,548x = 111,156.24 × 45,220
  4. Step 4: Simplify right side
    80,548x = 5,026,485,172.80
  5. Step 5: Solve for x
    x = 5,026,485,172.80/80,548
  6. Step 6: Final answer
    x = 62,403.60

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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.