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Finding the Fourth Proportional to 56,129.81, 77,459.88 and 33,160.40

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Solution

The fourth proportional to 56,129.81, 77,459.88 and 33,160.40 is: 45,761.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,129.81 : 77,459.88 = 33,160.40 : x
  2. Step 2: Convert to fraction form
    56,129.81/77,459.88 = 33,160.40/x
  3. Step 3: Cross multiply
    56,129.81x = 77,459.88 × 33,160.40
  4. Step 4: Simplify right side
    56,129.81x = 2,568,600,604.75
  5. Step 5: Solve for x
    x = 2,568,600,604.75/56,129.81
  6. Step 6: Final answer
    x = 45,761.79

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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.