Home / 52,383.17-78,572.64-12,939.28

Finding the Fourth Proportional to 52,383.17, 78,572.64 and 12,939.28

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Solution

The fourth proportional to 52,383.17, 78,572.64 and 12,939.28 is: 19,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,383.17 : 78,572.64 = 12,939.28 : x
  2. Step 2: Convert to fraction form
    52,383.17/78,572.64 = 12,939.28/x
  3. Step 3: Cross multiply
    52,383.17x = 78,572.64 × 12,939.28
  4. Step 4: Simplify right side
    52,383.17x = 1,016,673,389.30
  5. Step 5: Solve for x
    x = 1,016,673,389.30/52,383.17
  6. Step 6: Final answer
    x = 19,408.40

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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.