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Finding the Fourth Proportional to 93,320.40, 128,745.39 and 57,448.08

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Solution

The fourth proportional to 93,320.40, 128,745.39 and 57,448.08 is: 79,255.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,320.40 : 128,745.39 = 57,448.08 : x
  2. Step 2: Convert to fraction form
    93,320.40/128,745.39 = 57,448.08/x
  3. Step 3: Cross multiply
    93,320.40x = 128,745.39 × 57,448.08
  4. Step 4: Simplify right side
    93,320.40x = 7,396,175,464.35
  5. Step 5: Solve for x
    x = 7,396,175,464.35/93,320.40
  6. Step 6: Final answer
    x = 79,255.72

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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.