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Finding the Fourth Proportional to 30,565.59, 45,868.74 and 12,568.59

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Solution

The fourth proportional to 30,565.59, 45,868.74 and 12,568.59 is: 18,861.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,565.59 : 45,868.74 = 12,568.59 : x
  2. Step 2: Convert to fraction form
    30,565.59/45,868.74 = 12,568.59/x
  3. Step 3: Cross multiply
    30,565.59x = 45,868.74 × 12,568.59
  4. Step 4: Simplify right side
    30,565.59x = 576,505,386.88
  5. Step 5: Solve for x
    x = 576,505,386.88/30,565.59
  6. Step 6: Final answer
    x = 18,861.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.