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Finding the Fourth Proportional to 89,841.16, 123,964.50 and 55,858.60

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Solution

The fourth proportional to 89,841.16, 123,964.50 and 55,858.60 is: 77,074.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,841.16 : 123,964.50 = 55,858.60 : x
  2. Step 2: Convert to fraction form
    89,841.16/123,964.50 = 55,858.60/x
  3. Step 3: Cross multiply
    89,841.16x = 123,964.50 × 55,858.60
  4. Step 4: Simplify right side
    89,841.16x = 6,924,483,419.70
  5. Step 5: Solve for x
    x = 6,924,483,419.70/89,841.16
  6. Step 6: Final answer
    x = 77,074.73

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1.5x scale

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.