Home / 56,645.10-78,172.25-31,153.44

Finding the Fourth Proportional to 56,645.10, 78,172.25 and 31,153.44

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Solution

The fourth proportional to 56,645.10, 78,172.25 and 31,153.44 is: 42,992.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,645.10 : 78,172.25 = 31,153.44 : x
  2. Step 2: Convert to fraction form
    56,645.10/78,172.25 = 31,153.44/x
  3. Step 3: Cross multiply
    56,645.10x = 78,172.25 × 31,153.44
  4. Step 4: Simplify right side
    56,645.10x = 2,435,334,197.70
  5. Step 5: Solve for x
    x = 2,435,334,197.70/56,645.10
  6. Step 6: Final answer
    x = 42,992.85

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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.