Home / 89,729.16-123,830.28-53,935.80

Finding the Fourth Proportional to 89,729.16, 123,830.28 and 53,935.80

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Solution

The fourth proportional to 89,729.16, 123,830.28 and 53,935.80 is: 74,433.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,729.16 : 123,830.28 = 53,935.80 : x
  2. Step 2: Convert to fraction form
    89,729.16/123,830.28 = 53,935.80/x
  3. Step 3: Cross multiply
    89,729.16x = 123,830.28 × 53,935.80
  4. Step 4: Simplify right side
    89,729.16x = 6,678,885,216.02
  5. Step 5: Solve for x
    x = 6,678,885,216.02/89,729.16
  6. Step 6: Final answer
    x = 74,433.83

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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.