Home / 87,620.08-120,916.02-53,153.36

Finding the Fourth Proportional to 87,620.08, 120,916.02 and 53,153.36

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Solution

The fourth proportional to 87,620.08, 120,916.02 and 53,153.36 is: 73,351.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,620.08 : 120,916.02 = 53,153.36 : x
  2. Step 2: Convert to fraction form
    87,620.08/120,916.02 = 53,153.36/x
  3. Step 3: Cross multiply
    87,620.08x = 120,916.02 × 53,153.36
  4. Step 4: Simplify right side
    87,620.08x = 6,427,092,740.83
  5. Step 5: Solve for x
    x = 6,427,092,740.83/87,620.08
  6. Step 6: Final answer
    x = 73,351.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.