Home / 40,681-56,100.36-31,725.24

Finding the Fourth Proportional to 40,681, 56,100.36 and 31,725.24

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Solution

The fourth proportional to 40,681, 56,100.36 and 31,725.24 is: 43,750.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,681 : 56,100.36 = 31,725.24 : x
  2. Step 2: Convert to fraction form
    40,681/56,100.36 = 31,725.24/x
  3. Step 3: Cross multiply
    40,681x = 56,100.36 × 31,725.24
  4. Step 4: Simplify right side
    40,681x = 1,779,797,385.09
  5. Step 5: Solve for x
    x = 1,779,797,385.09/40,681
  6. Step 6: Final answer
    x = 43,750.09

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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.