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Finding the Fourth Proportional to 93,109.84, 128,469.72 and 52,814.32

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Solution

The fourth proportional to 93,109.84, 128,469.72 and 52,814.32 is: 72,871.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,109.84 : 128,469.72 = 52,814.32 : x
  2. Step 2: Convert to fraction form
    93,109.84/128,469.72 = 52,814.32/x
  3. Step 3: Cross multiply
    93,109.84x = 128,469.72 × 52,814.32
  4. Step 4: Simplify right side
    93,109.84x = 6,785,040,902.39
  5. Step 5: Solve for x
    x = 6,785,040,902.39/93,109.84
  6. Step 6: Final answer
    x = 72,871.36

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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.