Home / 81,150.40-121,725.60-47,886.40

Finding the Fourth Proportional to 81,150.40, 121,725.60 and 47,886.40

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Solution

The fourth proportional to 81,150.40, 121,725.60 and 47,886.40 is: 71,829.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,150.40 : 121,725.60 = 47,886.40 : x
  2. Step 2: Convert to fraction form
    81,150.40/121,725.60 = 47,886.40/x
  3. Step 3: Cross multiply
    81,150.40x = 121,725.60 × 47,886.40
  4. Step 4: Simplify right side
    81,150.40x = 5,829,000,771.84
  5. Step 5: Solve for x
    x = 5,829,000,771.84/81,150.40
  6. Step 6: Final answer
    x = 71,829.60

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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.