Home / 56,638.25-78,160.88-31,487.75

Finding the Fourth Proportional to 56,638.25, 78,160.88 and 31,487.75

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Solution

The fourth proportional to 56,638.25, 78,160.88 and 31,487.75 is: 43,453.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,638.25 : 78,160.88 = 31,487.75 : x
  2. Step 2: Convert to fraction form
    56,638.25/78,160.88 = 31,487.75/x
  3. Step 3: Cross multiply
    56,638.25x = 78,160.88 × 31,487.75
  4. Step 4: Simplify right side
    56,638.25x = 2,461,110,249.22
  5. Step 5: Solve for x
    x = 2,461,110,249.22/56,638.25
  6. Step 6: Final answer
    x = 43,453.15

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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.