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Finding the Fourth Proportional to 56,611.92, 78,046.32 and 45,165.72

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Solution

The fourth proportional to 56,611.92, 78,046.32 and 45,165.72 is: 62,266.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,611.92 : 78,046.32 = 45,165.72 : x
  2. Step 2: Convert to fraction form
    56,611.92/78,046.32 = 45,165.72/x
  3. Step 3: Cross multiply
    56,611.92x = 78,046.32 × 45,165.72
  4. Step 4: Simplify right side
    56,611.92x = 3,525,018,236.15
  5. Step 5: Solve for x
    x = 3,525,018,236.15/56,611.92
  6. Step 6: Final answer
    x = 62,266.36

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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.