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Finding the Fourth Proportional to 56,153.44, 77,489.04 and 30,660.76

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Solution

The fourth proportional to 56,153.44, 77,489.04 and 30,660.76 is: 42,310.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,153.44 : 77,489.04 = 30,660.76 : x
  2. Step 2: Convert to fraction form
    56,153.44/77,489.04 = 30,660.76/x
  3. Step 3: Cross multiply
    56,153.44x = 77,489.04 × 30,660.76
  4. Step 4: Simplify right side
    56,153.44x = 2,375,872,858.07
  5. Step 5: Solve for x
    x = 2,375,872,858.07/56,153.44
  6. Step 6: Final answer
    x = 42,310.37

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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.