Home / 56,711.68-78,131.10-40,768.56

Finding the Fourth Proportional to 56,711.68, 78,131.10 and 40,768.56

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Solution

The fourth proportional to 56,711.68, 78,131.10 and 40,768.56 is: 56,166.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,711.68 : 78,131.10 = 40,768.56 : x
  2. Step 2: Convert to fraction form
    56,711.68/78,131.10 = 40,768.56/x
  3. Step 3: Cross multiply
    56,711.68x = 78,131.10 × 40,768.56
  4. Step 4: Simplify right side
    56,711.68x = 3,185,292,438.22
  5. Step 5: Solve for x
    x = 3,185,292,438.22/56,711.68
  6. Step 6: Final answer
    x = 56,166.43

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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.