Home / 56,712.32-78,182.40-40,791.68

Finding the Fourth Proportional to 56,712.32, 78,182.40 and 40,791.68

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Solution

The fourth proportional to 56,712.32, 78,182.40 and 40,791.68 is: 56,234.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,712.32 : 78,182.40 = 40,791.68 : x
  2. Step 2: Convert to fraction form
    56,712.32/78,182.40 = 40,791.68/x
  3. Step 3: Cross multiply
    56,712.32x = 78,182.40 × 40,791.68
  4. Step 4: Simplify right side
    56,712.32x = 3,189,191,442.43
  5. Step 5: Solve for x
    x = 3,189,191,442.43/56,712.32
  6. Step 6: Final answer
    x = 56,234.54

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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.