Home / 89,429.36-123,412.11-51,188.72

Finding the Fourth Proportional to 89,429.36, 123,412.11 and 51,188.72

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Solution

The fourth proportional to 89,429.36, 123,412.11 and 51,188.72 is: 70,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,429.36 : 123,412.11 = 51,188.72 : x
  2. Step 2: Convert to fraction form
    89,429.36/123,412.11 = 51,188.72/x
  3. Step 3: Cross multiply
    89,429.36x = 123,412.11 × 51,188.72
  4. Step 4: Simplify right side
    89,429.36x = 6,317,307,943.40
  5. Step 5: Solve for x
    x = 6,317,307,943.40/89,429.36
  6. Step 6: Final answer
    x = 70,640.20

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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.