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Finding the Fourth Proportional to 89,876.76, 124,040.90 and 51,636.22

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Solution

The fourth proportional to 89,876.76, 124,040.90 and 51,636.22 is: 71,264.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,876.76 : 124,040.90 = 51,636.22 : x
  2. Step 2: Convert to fraction form
    89,876.76/124,040.90 = 51,636.22/x
  3. Step 3: Cross multiply
    89,876.76x = 124,040.90 × 51,636.22
  4. Step 4: Simplify right side
    89,876.76x = 6,405,003,201.40
  5. Step 5: Solve for x
    x = 6,405,003,201.40/89,876.76
  6. Step 6: Final answer
    x = 71,264.29

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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.