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Finding the Fourth Proportional to 53,360.78, 80,045.21 and 15,917.92

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Solution

The fourth proportional to 53,360.78, 80,045.21 and 15,917.92 is: 23,878.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,360.78 : 80,045.21 = 15,917.92 : x
  2. Step 2: Convert to fraction form
    53,360.78/80,045.21 = 15,917.92/x
  3. Step 3: Cross multiply
    53,360.78x = 80,045.21 × 15,917.92
  4. Step 4: Simplify right side
    53,360.78x = 1,274,153,088.84
  5. Step 5: Solve for x
    x = 1,274,153,088.84/53,360.78
  6. Step 6: Final answer
    x = 23,878.08

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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.