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Finding the Fourth Proportional to 93,412.40, 128,775.57 and 57,578.54

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Solution

The fourth proportional to 93,412.40, 128,775.57 and 57,578.54 is: 79,376.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,412.40 : 128,775.57 = 57,578.54 : x
  2. Step 2: Convert to fraction form
    93,412.40/128,775.57 = 57,578.54/x
  3. Step 3: Cross multiply
    93,412.40x = 128,775.57 × 57,578.54
  4. Step 4: Simplify right side
    93,412.40x = 7,414,709,308.27
  5. Step 5: Solve for x
    x = 7,414,709,308.27/93,412.40
  6. Step 6: Final answer
    x = 79,376.07

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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.