Home / 78,987.30-118,527.78-29,102.41

Finding the Fourth Proportional to 78,987.30, 118,527.78 and 29,102.41

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Solution

The fourth proportional to 78,987.30, 118,527.78 and 29,102.41 is: 43,670.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,987.30 : 118,527.78 = 29,102.41 : x
  2. Step 2: Convert to fraction form
    78,987.30/118,527.78 = 29,102.41/x
  3. Step 3: Cross multiply
    78,987.30x = 118,527.78 × 29,102.41
  4. Step 4: Simplify right side
    78,987.30x = 3,449,444,558.75
  5. Step 5: Solve for x
    x = 3,449,444,558.75/78,987.30
  6. Step 6: Final answer
    x = 43,670.87

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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.