Home / 89,235.92-123,140.04-53,428.88

Finding the Fourth Proportional to 89,235.92, 123,140.04 and 53,428.88

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Solution

The fourth proportional to 89,235.92, 123,140.04 and 53,428.88 is: 73,728.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,235.92 : 123,140.04 = 53,428.88 : x
  2. Step 2: Convert to fraction form
    89,235.92/123,140.04 = 53,428.88/x
  3. Step 3: Cross multiply
    89,235.92x = 123,140.04 × 53,428.88
  4. Step 4: Simplify right side
    89,235.92x = 6,579,234,420.36
  5. Step 5: Solve for x
    x = 6,579,234,420.36/89,235.92
  6. Step 6: Final answer
    x = 73,728.54

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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.