Home / 40,720.61-61,082.76-11,137.79

Finding the Fourth Proportional to 40,720.61, 61,082.76 and 11,137.79

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Solution

The fourth proportional to 40,720.61, 61,082.76 and 11,137.79 is: 16,707.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,720.61 : 61,082.76 = 11,137.79 : x
  2. Step 2: Convert to fraction form
    40,720.61/61,082.76 = 11,137.79/x
  3. Step 3: Cross multiply
    40,720.61x = 61,082.76 × 11,137.79
  4. Step 4: Simplify right side
    40,720.61x = 680,326,953.50
  5. Step 5: Solve for x
    x = 680,326,953.50/40,720.61
  6. Step 6: Final answer
    x = 16,707.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.