Home / 85,724.52-118,299.04-47,999.40

Finding the Fourth Proportional to 85,724.52, 118,299.04 and 47,999.40

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Solution

The fourth proportional to 85,724.52, 118,299.04 and 47,999.40 is: 66,238.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,724.52 : 118,299.04 = 47,999.40 : x
  2. Step 2: Convert to fraction form
    85,724.52/118,299.04 = 47,999.40/x
  3. Step 3: Cross multiply
    85,724.52x = 118,299.04 × 47,999.40
  4. Step 4: Simplify right side
    85,724.52x = 5,678,282,940.58
  5. Step 5: Solve for x
    x = 5,678,282,940.58/85,724.52
  6. Step 6: Final answer
    x = 66,238.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.