Home / 56,771.91-78,348.74-31,621.41

Finding the Fourth Proportional to 56,771.91, 78,348.74 and 31,621.41

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Solution

The fourth proportional to 56,771.91, 78,348.74 and 31,621.41 is: 43,639.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,771.91 : 78,348.74 = 31,621.41 : x
  2. Step 2: Convert to fraction form
    56,771.91/78,348.74 = 31,621.41/x
  3. Step 3: Cross multiply
    56,771.91x = 78,348.74 × 31,621.41
  4. Step 4: Simplify right side
    56,771.91x = 2,477,497,472.42
  5. Step 5: Solve for x
    x = 2,477,497,472.42/56,771.91
  6. Step 6: Final answer
    x = 43,639.49

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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.