Home / 56,215.08-77,576.13-30,721.32

Finding the Fourth Proportional to 56,215.08, 77,576.13 and 30,721.32

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Solution

The fourth proportional to 56,215.08, 77,576.13 and 30,721.32 is: 42,395.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,215.08 : 77,576.13 = 30,721.32 : x
  2. Step 2: Convert to fraction form
    56,215.08/77,576.13 = 30,721.32/x
  3. Step 3: Cross multiply
    56,215.08x = 77,576.13 × 30,721.32
  4. Step 4: Simplify right side
    56,215.08x = 2,383,241,114.09
  5. Step 5: Solve for x
    x = 2,383,241,114.09/56,215.08
  6. Step 6: Final answer
    x = 42,395.05

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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.