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Finding the Fourth Proportional to 89,495.98, 123,503.45 and 66,628.05

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Solution

The fourth proportional to 89,495.98, 123,503.45 and 66,628.05 is: 91,945.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,495.98 : 123,503.45 = 66,628.05 : x
  2. Step 2: Convert to fraction form
    89,495.98/123,503.45 = 66,628.05/x
  3. Step 3: Cross multiply
    89,495.98x = 123,503.45 × 66,628.05
  4. Step 4: Simplify right side
    89,495.98x = 8,228,794,041.77
  5. Step 5: Solve for x
    x = 8,228,794,041.77/89,495.98
  6. Step 6: Final answer
    x = 91,945.96

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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.