Home / 85,938.44-129,001.86-68,282.60

Finding the Fourth Proportional to 85,938.44, 129,001.86 and 68,282.60

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Solution

The fourth proportional to 85,938.44, 129,001.86 and 68,282.60 is: 102,498.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,938.44 : 129,001.86 = 68,282.60 : x
  2. Step 2: Convert to fraction form
    85,938.44/129,001.86 = 68,282.60/x
  3. Step 3: Cross multiply
    85,938.44x = 129,001.86 × 68,282.60
  4. Step 4: Simplify right side
    85,938.44x = 8,808,582,405.64
  5. Step 5: Solve for x
    x = 8,808,582,405.64/85,938.44
  6. Step 6: Final answer
    x = 102,498.75

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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.