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Finding the Fourth Proportional to 53,362.74, 80,045.55 and 13,918.98

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Solution

The fourth proportional to 53,362.74, 80,045.55 and 13,918.98 is: 20,878.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,362.74 : 80,045.55 = 13,918.98 : x
  2. Step 2: Convert to fraction form
    53,362.74/80,045.55 = 13,918.98/x
  3. Step 3: Cross multiply
    53,362.74x = 80,045.55 × 13,918.98
  4. Step 4: Simplify right side
    53,362.74x = 1,114,152,409.54
  5. Step 5: Solve for x
    x = 1,114,152,409.54/53,362.74
  6. Step 6: Final answer
    x = 20,878.85

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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.