Home / 89,645.85-123,712.85-51,405.35

Finding the Fourth Proportional to 89,645.85, 123,712.85 and 51,405.35

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Solution

The fourth proportional to 89,645.85, 123,712.85 and 51,405.35 is: 70,940.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,645.85 : 123,712.85 = 51,405.35 : x
  2. Step 2: Convert to fraction form
    89,645.85/123,712.85 = 51,405.35/x
  3. Step 3: Cross multiply
    89,645.85x = 123,712.85 × 51,405.35
  4. Step 4: Simplify right side
    89,645.85x = 6,359,501,863.70
  5. Step 5: Solve for x
    x = 6,359,501,863.70/89,645.85
  6. Step 6: Final answer
    x = 70,940.28

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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.