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Finding the Fourth Proportional to 93,128.08, 128,560.08 and 54,875.56

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Solution

The fourth proportional to 93,128.08, 128,560.08 and 54,875.56 is: 75,753.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,128.08 : 128,560.08 = 54,875.56 : x
  2. Step 2: Convert to fraction form
    93,128.08/128,560.08 = 54,875.56/x
  3. Step 3: Cross multiply
    93,128.08x = 128,560.08 × 54,875.56
  4. Step 4: Simplify right side
    93,128.08x = 7,054,806,383.64
  5. Step 5: Solve for x
    x = 7,054,806,383.64/93,128.08
  6. Step 6: Final answer
    x = 75,753.80

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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.