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Finding the Fourth Proportional to 57,376.44, 86,078.50 and 19,931.07

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Solution

The fourth proportional to 57,376.44, 86,078.50 and 19,931.07 is: 29,901.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,376.44 : 86,078.50 = 19,931.07 : x
  2. Step 2: Convert to fraction form
    57,376.44/86,078.50 = 19,931.07/x
  3. Step 3: Cross multiply
    57,376.44x = 86,078.50 × 19,931.07
  4. Step 4: Simplify right side
    57,376.44x = 1,715,636,458.29
  5. Step 5: Solve for x
    x = 1,715,636,458.29/57,376.44
  6. Step 6: Final answer
    x = 29,901.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.