Home / 52,259.86-78,389.64-18,979.79

Finding the Fourth Proportional to 52,259.86, 78,389.64 and 18,979.79

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Solution

The fourth proportional to 52,259.86, 78,389.64 and 18,979.79 is: 28,469.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,259.86 : 78,389.64 = 18,979.79 : x
  2. Step 2: Convert to fraction form
    52,259.86/78,389.64 = 18,979.79/x
  3. Step 3: Cross multiply
    52,259.86x = 78,389.64 × 18,979.79
  4. Step 4: Simplify right side
    52,259.86x = 1,487,818,905.38
  5. Step 5: Solve for x
    x = 1,487,818,905.38/52,259.86
  6. Step 6: Final answer
    x = 28,469.63

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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.