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Finding the Fourth Proportional to 78,544.60, 117,816.90 and 41,090.20

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Solution

The fourth proportional to 78,544.60, 117,816.90 and 41,090.20 is: 61,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,544.60 : 117,816.90 = 41,090.20 : x
  2. Step 2: Convert to fraction form
    78,544.60/117,816.90 = 41,090.20/x
  3. Step 3: Cross multiply
    78,544.60x = 117,816.90 × 41,090.20
  4. Step 4: Simplify right side
    78,544.60x = 4,841,119,984.38
  5. Step 5: Solve for x
    x = 4,841,119,984.38/78,544.60
  6. Step 6: Final answer
    x = 61,635.30

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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.