Home / 63,485.39-87,584.91-40,820.78

Finding the Fourth Proportional to 63,485.39, 87,584.91 and 40,820.78

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Solution

The fourth proportional to 63,485.39, 87,584.91 and 40,820.78 is: 56,316.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,485.39 : 87,584.91 = 40,820.78 : x
  2. Step 2: Convert to fraction form
    63,485.39/87,584.91 = 40,820.78/x
  3. Step 3: Cross multiply
    63,485.39x = 87,584.91 × 40,820.78
  4. Step 4: Simplify right side
    63,485.39x = 3,575,284,342.43
  5. Step 5: Solve for x
    x = 3,575,284,342.43/63,485.39
  6. Step 6: Final answer
    x = 56,316.65

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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.