Home / 56,682.48-78,219.84-31,188.72

Finding the Fourth Proportional to 56,682.48, 78,219.84 and 31,188.72

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Solution

The fourth proportional to 56,682.48, 78,219.84 and 31,188.72 is: 43,039.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,682.48 : 78,219.84 = 31,188.72 : x
  2. Step 2: Convert to fraction form
    56,682.48/78,219.84 = 31,188.72/x
  3. Step 3: Cross multiply
    56,682.48x = 78,219.84 × 31,188.72
  4. Step 4: Simplify right side
    56,682.48x = 2,439,576,688.20
  5. Step 5: Solve for x
    x = 2,439,576,688.20/56,682.48
  6. Step 6: Final answer
    x = 43,039.34

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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.