Home / 56,625.06-78,143.11-31,131.60

Finding the Fourth Proportional to 56,625.06, 78,143.11 and 31,131.60

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Solution

The fourth proportional to 56,625.06, 78,143.11 and 31,131.60 is: 42,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,625.06 : 78,143.11 = 31,131.60 : x
  2. Step 2: Convert to fraction form
    56,625.06/78,143.11 = 31,131.60/x
  3. Step 3: Cross multiply
    56,625.06x = 78,143.11 × 31,131.60
  4. Step 4: Simplify right side
    56,625.06x = 2,432,720,258.48
  5. Step 5: Solve for x
    x = 2,432,720,258.48/56,625.06
  6. Step 6: Final answer
    x = 42,961.90

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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.