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Finding the Fourth Proportional to 103,636, 155,503.20 and 44,488.60

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Solution

The fourth proportional to 103,636, 155,503.20 and 44,488.60 is: 66,754.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,636 : 155,503.20 = 44,488.60 : x
  2. Step 2: Convert to fraction form
    103,636/155,503.20 = 44,488.60/x
  3. Step 3: Cross multiply
    103,636x = 155,503.20 × 44,488.60
  4. Step 4: Simplify right side
    103,636x = 6,918,119,663.52
  5. Step 5: Solve for x
    x = 6,918,119,663.52/103,636
  6. Step 6: Final answer
    x = 66,754.02

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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.