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Finding the Fourth Proportional to 65,079.60, 97,619.40 and 54,193.20

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Solution

The fourth proportional to 65,079.60, 97,619.40 and 54,193.20 is: 81,289.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,079.60 : 97,619.40 = 54,193.20 : x
  2. Step 2: Convert to fraction form
    65,079.60/97,619.40 = 54,193.20/x
  3. Step 3: Cross multiply
    65,079.60x = 97,619.40 × 54,193.20
  4. Step 4: Simplify right side
    65,079.60x = 5,290,307,668.08
  5. Step 5: Solve for x
    x = 5,290,307,668.08/65,079.60
  6. Step 6: Final answer
    x = 81,289.80

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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.