Home / 56,425.08-77,869.26-31,275

Finding the Fourth Proportional to 56,425.08, 77,869.26 and 31,275

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Solution

The fourth proportional to 56,425.08, 77,869.26 and 31,275 is: 43,160.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,425.08 : 77,869.26 = 31,275 : x
  2. Step 2: Convert to fraction form
    56,425.08/77,869.26 = 31,275/x
  3. Step 3: Cross multiply
    56,425.08x = 77,869.26 × 31,275
  4. Step 4: Simplify right side
    56,425.08x = 2,435,361,106.50
  5. Step 5: Solve for x
    x = 2,435,361,106.50/56,425.08
  6. Step 6: Final answer
    x = 43,160.97

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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.