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Finding the Fourth Proportional to 93,321.40, 128,746.77 and 57,449.08

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Solution

The fourth proportional to 93,321.40, 128,746.77 and 57,449.08 is: 79,257.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,321.40 : 128,746.77 = 57,449.08 : x
  2. Step 2: Convert to fraction form
    93,321.40/128,746.77 = 57,449.08/x
  3. Step 3: Cross multiply
    93,321.40x = 128,746.77 × 57,449.08
  4. Step 4: Simplify right side
    93,321.40x = 7,396,383,489.47
  5. Step 5: Solve for x
    x = 7,396,383,489.47/93,321.40
  6. Step 6: Final answer
    x = 79,257.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.