Home / 89,235.42-123,139.35-53,428.38

Finding the Fourth Proportional to 89,235.42, 123,139.35 and 53,428.38

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Solution

The fourth proportional to 89,235.42, 123,139.35 and 53,428.38 is: 73,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,235.42 : 123,139.35 = 53,428.38 : x
  2. Step 2: Convert to fraction form
    89,235.42/123,139.35 = 53,428.38/x
  3. Step 3: Cross multiply
    89,235.42x = 123,139.35 × 53,428.38
  4. Step 4: Simplify right side
    89,235.42x = 6,579,135,984.75
  5. Step 5: Solve for x
    x = 6,579,135,984.75/89,235.42
  6. Step 6: Final answer
    x = 73,727.85

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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.