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Finding the Fourth Proportional to 89,503.54, 123,484.14 and 55,499.78

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Solution

The fourth proportional to 89,503.54, 123,484.14 and 55,499.78 is: 76,570.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,503.54 : 123,484.14 = 55,499.78 : x
  2. Step 2: Convert to fraction form
    89,503.54/123,484.14 = 55,499.78/x
  3. Step 3: Cross multiply
    89,503.54x = 123,484.14 × 55,499.78
  4. Step 4: Simplify right side
    89,503.54x = 6,853,342,603.49
  5. Step 5: Solve for x
    x = 6,853,342,603.49/89,503.54
  6. Step 6: Final answer
    x = 76,570.63

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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.