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Finding the Fourth Proportional to 57,679.60, 86,503.20 and 18,248.80

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Solution

The fourth proportional to 57,679.60, 86,503.20 and 18,248.80 is: 27,368.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,679.60 : 86,503.20 = 18,248.80 : x
  2. Step 2: Convert to fraction form
    57,679.60/86,503.20 = 18,248.80/x
  3. Step 3: Cross multiply
    57,679.60x = 86,503.20 × 18,248.80
  4. Step 4: Simplify right side
    57,679.60x = 1,578,579,596.16
  5. Step 5: Solve for x
    x = 1,578,579,596.16/57,679.60
  6. Step 6: Final answer
    x = 27,368.07

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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.