Home / 89,669.85-123,739.65-51,427.43

Finding the Fourth Proportional to 89,669.85, 123,739.65 and 51,427.43

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Solution

The fourth proportional to 89,669.85, 123,739.65 and 51,427.43 is: 70,967.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,669.85 : 123,739.65 = 51,427.43 : x
  2. Step 2: Convert to fraction form
    89,669.85/123,739.65 = 51,427.43/x
  3. Step 3: Cross multiply
    89,669.85x = 123,739.65 × 51,427.43
  4. Step 4: Simplify right side
    89,669.85x = 6,363,611,569.90
  5. Step 5: Solve for x
    x = 6,363,611,569.90/89,669.85
  6. Step 6: Final answer
    x = 70,967.13

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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.