Home / 85,311.47-127,987.23-29,152.05

Finding the Fourth Proportional to 85,311.47, 127,987.23 and 29,152.05

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Solution

The fourth proportional to 85,311.47, 127,987.23 and 29,152.05 is: 43,734.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,311.47 : 127,987.23 = 29,152.05 : x
  2. Step 2: Convert to fraction form
    85,311.47/127,987.23 = 29,152.05/x
  3. Step 3: Cross multiply
    85,311.47x = 127,987.23 × 29,152.05
  4. Step 4: Simplify right side
    85,311.47x = 3,731,089,488.39
  5. Step 5: Solve for x
    x = 3,731,089,488.39/85,311.47
  6. Step 6: Final answer
    x = 43,734.91

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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.