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Finding the Fourth Proportional to 89,605.80, 123,604.50 and 56,013.48

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Solution

The fourth proportional to 89,605.80, 123,604.50 and 56,013.48 is: 77,266.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,605.80 : 123,604.50 = 56,013.48 : x
  2. Step 2: Convert to fraction form
    89,605.80/123,604.50 = 56,013.48/x
  3. Step 3: Cross multiply
    89,605.80x = 123,604.50 × 56,013.48
  4. Step 4: Simplify right side
    89,605.80x = 6,923,518,188.66
  5. Step 5: Solve for x
    x = 6,923,518,188.66/89,605.80
  6. Step 6: Final answer
    x = 77,266.41

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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.