Home / 63,691.32-87,811.38-40,989.72

Finding the Fourth Proportional to 63,691.32, 87,811.38 and 40,989.72

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Solution

The fourth proportional to 63,691.32, 87,811.38 and 40,989.72 is: 56,512.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,691.32 : 87,811.38 = 40,989.72 : x
  2. Step 2: Convert to fraction form
    63,691.32/87,811.38 = 40,989.72/x
  3. Step 3: Cross multiply
    63,691.32x = 87,811.38 × 40,989.72
  4. Step 4: Simplify right side
    63,691.32x = 3,599,363,879.01
  5. Step 5: Solve for x
    x = 3,599,363,879.01/63,691.32
  6. Step 6: Final answer
    x = 56,512.63

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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.