Home / 56,213.64-77,576.28-30,721.08

Finding the Fourth Proportional to 56,213.64, 77,576.28 and 30,721.08

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Solution

The fourth proportional to 56,213.64, 77,576.28 and 30,721.08 is: 42,395.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,213.64 : 77,576.28 = 30,721.08 : x
  2. Step 2: Convert to fraction form
    56,213.64/77,576.28 = 30,721.08/x
  3. Step 3: Cross multiply
    56,213.64x = 77,576.28 × 30,721.08
  4. Step 4: Simplify right side
    56,213.64x = 2,383,227,103.98
  5. Step 5: Solve for x
    x = 2,383,227,103.98/56,213.64
  6. Step 6: Final answer
    x = 42,395.89

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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.