Home / 85,278.42-127,753.61-47,724.80

Finding the Fourth Proportional to 85,278.42, 127,753.61 and 47,724.80

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Solution

The fourth proportional to 85,278.42, 127,753.61 and 47,724.80 is: 71,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,278.42 : 127,753.61 = 47,724.80 : x
  2. Step 2: Convert to fraction form
    85,278.42/127,753.61 = 47,724.80/x
  3. Step 3: Cross multiply
    85,278.42x = 127,753.61 × 47,724.80
  4. Step 4: Simplify right side
    85,278.42x = 6,097,014,609.14
  5. Step 5: Solve for x
    x = 6,097,014,609.14/85,278.42
  6. Step 6: Final answer
    x = 71,495.40

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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.