Home / 56,707.96-78,256.34-31,213.78

Finding the Fourth Proportional to 56,707.96, 78,256.34 and 31,213.78

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Solution

The fourth proportional to 56,707.96, 78,256.34 and 31,213.78 is: 43,074.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,707.96 : 78,256.34 = 31,213.78 : x
  2. Step 2: Convert to fraction form
    56,707.96/78,256.34 = 31,213.78/x
  3. Step 3: Cross multiply
    56,707.96x = 78,256.34 × 31,213.78
  4. Step 4: Simplify right side
    56,707.96x = 2,442,676,180.37
  5. Step 5: Solve for x
    x = 2,442,676,180.37/56,707.96
  6. Step 6: Final answer
    x = 43,074.66

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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.