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Finding the Fourth Proportional to 64,389.60, 96,539.40 and 38,080.80

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Solution

The fourth proportional to 64,389.60, 96,539.40 and 38,080.80 is: 57,094.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,389.60 : 96,539.40 = 38,080.80 : x
  2. Step 2: Convert to fraction form
    64,389.60/96,539.40 = 38,080.80/x
  3. Step 3: Cross multiply
    64,389.60x = 96,539.40 × 38,080.80
  4. Step 4: Simplify right side
    64,389.60x = 3,676,297,583.52
  5. Step 5: Solve for x
    x = 3,676,297,583.52/64,389.60
  6. Step 6: Final answer
    x = 57,094.59

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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.