Home / 85,188.24-127,686.78-28,975.86

Finding the Fourth Proportional to 85,188.24, 127,686.78 and 28,975.86

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Solution

The fourth proportional to 85,188.24, 127,686.78 and 28,975.86 is: 43,431.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,188.24 : 127,686.78 = 28,975.86 : x
  2. Step 2: Convert to fraction form
    85,188.24/127,686.78 = 28,975.86/x
  3. Step 3: Cross multiply
    85,188.24x = 127,686.78 × 28,975.86
  4. Step 4: Simplify right side
    85,188.24x = 3,699,834,261.13
  5. Step 5: Solve for x
    x = 3,699,834,261.13/85,188.24
  6. Step 6: Final answer
    x = 43,431.28

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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.