Home / 93,278.40-128,727-50,839.68

Finding the Fourth Proportional to 93,278.40, 128,727 and 50,839.68

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Solution

The fourth proportional to 93,278.40, 128,727 and 50,839.68 is: 70,160.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,278.40 : 128,727 = 50,839.68 : x
  2. Step 2: Convert to fraction form
    93,278.40/128,727 = 50,839.68/x
  3. Step 3: Cross multiply
    93,278.40x = 128,727 × 50,839.68
  4. Step 4: Simplify right side
    93,278.40x = 6,544,439,487.36
  5. Step 5: Solve for x
    x = 6,544,439,487.36/93,278.40
  6. Step 6: Final answer
    x = 70,160.29

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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.