Home / 89,439.12-123,399.04-53,616.06

Finding the Fourth Proportional to 89,439.12, 123,399.04 and 53,616.06

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Solution

The fourth proportional to 89,439.12, 123,399.04 and 53,616.06 is: 73,974.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,439.12 : 123,399.04 = 53,616.06 : x
  2. Step 2: Convert to fraction form
    89,439.12/123,399.04 = 53,616.06/x
  3. Step 3: Cross multiply
    89,439.12x = 123,399.04 × 53,616.06
  4. Step 4: Simplify right side
    89,439.12x = 6,616,170,332.58
  5. Step 5: Solve for x
    x = 6,616,170,332.58/89,439.12
  6. Step 6: Final answer
    x = 73,974.01

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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.