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Finding the Fourth Proportional to 53,393.98, 80,103.11 and 28,420.87

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Solution

The fourth proportional to 53,393.98, 80,103.11 and 28,420.87 is: 42,637.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,393.98 : 80,103.11 = 28,420.87 : x
  2. Step 2: Convert to fraction form
    53,393.98/80,103.11 = 28,420.87/x
  3. Step 3: Cross multiply
    53,393.98x = 80,103.11 × 28,420.87
  4. Step 4: Simplify right side
    53,393.98x = 2,276,599,946.70
  5. Step 5: Solve for x
    x = 2,276,599,946.70/53,393.98
  6. Step 6: Final answer
    x = 42,637.77

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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.