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Finding the Fourth Proportional to 64,410.40, 96,615.60 and 54,042.40

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Solution

The fourth proportional to 64,410.40, 96,615.60 and 54,042.40 is: 81,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,410.40 : 96,615.60 = 54,042.40 : x
  2. Step 2: Convert to fraction form
    64,410.40/96,615.60 = 54,042.40/x
  3. Step 3: Cross multiply
    64,410.40x = 96,615.60 × 54,042.40
  4. Step 4: Simplify right side
    64,410.40x = 5,221,338,901.44
  5. Step 5: Solve for x
    x = 5,221,338,901.44/64,410.40
  6. Step 6: Final answer
    x = 81,063.60

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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.