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Finding the Fourth Proportional to 76,801.60, 115,202.40 and 54,494.20

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Solution

The fourth proportional to 76,801.60, 115,202.40 and 54,494.20 is: 81,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,801.60 : 115,202.40 = 54,494.20 : x
  2. Step 2: Convert to fraction form
    76,801.60/115,202.40 = 54,494.20/x
  3. Step 3: Cross multiply
    76,801.60x = 115,202.40 × 54,494.20
  4. Step 4: Simplify right side
    76,801.60x = 6,277,862,626.08
  5. Step 5: Solve for x
    x = 6,277,862,626.08/76,801.60
  6. Step 6: Final answer
    x = 81,741.30

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1.5x scale

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.