Home / 56,671.36-78,205.44-31,520.64

Finding the Fourth Proportional to 56,671.36, 78,205.44 and 31,520.64

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Solution

The fourth proportional to 56,671.36, 78,205.44 and 31,520.64 is: 43,497.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,671.36 : 78,205.44 = 31,520.64 : x
  2. Step 2: Convert to fraction form
    56,671.36/78,205.44 = 31,520.64/x
  3. Step 3: Cross multiply
    56,671.36x = 78,205.44 × 31,520.64
  4. Step 4: Simplify right side
    56,671.36x = 2,465,085,520.28
  5. Step 5: Solve for x
    x = 2,465,085,520.28/56,671.36
  6. Step 6: Final answer
    x = 43,497.91

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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.