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Finding the Fourth Proportional to 93,410.28, 128,909.02 and 53,129.84

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Solution

The fourth proportional to 93,410.28, 128,909.02 and 53,129.84 is: 73,320.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,410.28 : 128,909.02 = 53,129.84 : x
  2. Step 2: Convert to fraction form
    93,410.28/128,909.02 = 53,129.84/x
  3. Step 3: Cross multiply
    93,410.28x = 128,909.02 × 53,129.84
  4. Step 4: Simplify right side
    93,410.28x = 6,848,914,829.79
  5. Step 5: Solve for x
    x = 6,848,914,829.79/93,410.28
  6. Step 6: Final answer
    x = 73,320.78

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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.