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Finding the Fourth Proportional to 56,380.76, 77,807.92 and 31,230.26

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Solution

The fourth proportional to 56,380.76, 77,807.92 and 31,230.26 is: 43,099.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,380.76 : 77,807.92 = 31,230.26 : x
  2. Step 2: Convert to fraction form
    56,380.76/77,807.92 = 31,230.26/x
  3. Step 3: Cross multiply
    56,380.76x = 77,807.92 × 31,230.26
  4. Step 4: Simplify right side
    56,380.76x = 2,429,961,571.66
  5. Step 5: Solve for x
    x = 2,429,961,571.66/56,380.76
  6. Step 6: Final answer
    x = 43,099.13

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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.