Home / 93,436.56-128,905.20-57,564.36

Finding the Fourth Proportional to 93,436.56, 128,905.20 and 57,564.36

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Solution

The fourth proportional to 93,436.56, 128,905.20 and 57,564.36 is: 79,415.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,436.56 : 128,905.20 = 57,564.36 : x
  2. Step 2: Convert to fraction form
    93,436.56/128,905.20 = 57,564.36/x
  3. Step 3: Cross multiply
    93,436.56x = 128,905.20 × 57,564.36
  4. Step 4: Simplify right side
    93,436.56x = 7,420,345,338.67
  5. Step 5: Solve for x
    x = 7,420,345,338.67/93,436.56
  6. Step 6: Final answer
    x = 79,415.87

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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.