Home / 55,709.95-76,878.52-31,507.72

Finding the Fourth Proportional to 55,709.95, 76,878.52 and 31,507.72

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Solution

The fourth proportional to 55,709.95, 76,878.52 and 31,507.72 is: 43,479.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,709.95 : 76,878.52 = 31,507.72 : x
  2. Step 2: Convert to fraction form
    55,709.95/76,878.52 = 31,507.72/x
  3. Step 3: Cross multiply
    55,709.95x = 76,878.52 × 31,507.72
  4. Step 4: Simplify right side
    55,709.95x = 2,422,266,882.17
  5. Step 5: Solve for x
    x = 2,422,266,882.17/55,709.95
  6. Step 6: Final answer
    x = 43,479.97

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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.