Home / 39,700.61-54,786.17-21,795.49

Finding the Fourth Proportional to 39,700.61, 54,786.17 and 21,795.49

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Solution

The fourth proportional to 39,700.61, 54,786.17 and 21,795.49 is: 30,077.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,700.61 : 54,786.17 = 21,795.49 : x
  2. Step 2: Convert to fraction form
    39,700.61/54,786.17 = 21,795.49/x
  3. Step 3: Cross multiply
    39,700.61x = 54,786.17 × 21,795.49
  4. Step 4: Simplify right side
    39,700.61x = 1,194,091,378.55
  5. Step 5: Solve for x
    x = 1,194,091,378.55/39,700.61
  6. Step 6: Final answer
    x = 30,077.40

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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.