Home / 85,788.72-118,395-53,984.88

Finding the Fourth Proportional to 85,788.72, 118,395 and 53,984.88

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Solution

The fourth proportional to 85,788.72, 118,395 and 53,984.88 is: 74,503.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,788.72 : 118,395 = 53,984.88 : x
  2. Step 2: Convert to fraction form
    85,788.72/118,395 = 53,984.88/x
  3. Step 3: Cross multiply
    85,788.72x = 118,395 × 53,984.88
  4. Step 4: Simplify right side
    85,788.72x = 6,391,539,867.60
  5. Step 5: Solve for x
    x = 6,391,539,867.60/85,788.72
  6. Step 6: Final answer
    x = 74,503.27

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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.