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Finding the Fourth Proportional to 56,896.32, 78,520.32 and 31,745.28

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Solution

The fourth proportional to 56,896.32, 78,520.32 and 31,745.28 is: 43,810.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,896.32 : 78,520.32 = 31,745.28 : x
  2. Step 2: Convert to fraction form
    56,896.32/78,520.32 = 31,745.28/x
  3. Step 3: Cross multiply
    56,896.32x = 78,520.32 × 31,745.28
  4. Step 4: Simplify right side
    56,896.32x = 2,492,649,544.09
  5. Step 5: Solve for x
    x = 2,492,649,544.09/56,896.32
  6. Step 6: Final answer
    x = 43,810.38

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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.