Home / 89,128.72-122,971.26-50,887

Finding the Fourth Proportional to 89,128.72, 122,971.26 and 50,887

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Solution

The fourth proportional to 89,128.72, 122,971.26 and 50,887 is: 70,209.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,128.72 : 122,971.26 = 50,887 : x
  2. Step 2: Convert to fraction form
    89,128.72/122,971.26 = 50,887/x
  3. Step 3: Cross multiply
    89,128.72x = 122,971.26 × 50,887
  4. Step 4: Simplify right side
    89,128.72x = 6,257,638,507.62
  5. Step 5: Solve for x
    x = 6,257,638,507.62/89,128.72
  6. Step 6: Final answer
    x = 70,209.00

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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.