Home / 93,390.24-128,901.78-57,609.60

Finding the Fourth Proportional to 93,390.24, 128,901.78 and 57,609.60

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Solution

The fourth proportional to 93,390.24, 128,901.78 and 57,609.60 is: 79,515.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,390.24 : 128,901.78 = 57,609.60 : x
  2. Step 2: Convert to fraction form
    93,390.24/128,901.78 = 57,609.60/x
  3. Step 3: Cross multiply
    93,390.24x = 128,901.78 × 57,609.60
  4. Step 4: Simplify right side
    93,390.24x = 7,425,979,985.09
  5. Step 5: Solve for x
    x = 7,425,979,985.09/93,390.24
  6. Step 6: Final answer
    x = 79,515.59

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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.