Home / 55,912.32-77,156.64-30,761.28

Finding the Fourth Proportional to 55,912.32, 77,156.64 and 30,761.28

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Solution

The fourth proportional to 55,912.32, 77,156.64 and 30,761.28 is: 42,449.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,912.32 : 77,156.64 = 30,761.28 : x
  2. Step 2: Convert to fraction form
    55,912.32/77,156.64 = 30,761.28/x
  3. Step 3: Cross multiply
    55,912.32x = 77,156.64 × 30,761.28
  4. Step 4: Simplify right side
    55,912.32x = 2,373,437,006.90
  5. Step 5: Solve for x
    x = 2,373,437,006.90/55,912.32
  6. Step 6: Final answer
    x = 42,449.27

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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.