Home / 89,403.89-123,346.34-57,157.38

Finding the Fourth Proportional to 89,403.89, 123,346.34 and 57,157.38

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Solution

The fourth proportional to 89,403.89, 123,346.34 and 57,157.38 is: 78,857.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,403.89 : 123,346.34 = 57,157.38 : x
  2. Step 2: Convert to fraction form
    89,403.89/123,346.34 = 57,157.38/x
  3. Step 3: Cross multiply
    89,403.89x = 123,346.34 × 57,157.38
  4. Step 4: Simplify right side
    89,403.89x = 7,050,153,769.88
  5. Step 5: Solve for x
    x = 7,050,153,769.88/89,403.89
  6. Step 6: Final answer
    x = 78,857.35

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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.