Home / 87,558.72-120,880.80-57,837.12

Finding the Fourth Proportional to 87,558.72, 120,880.80 and 57,837.12

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Solution

The fourth proportional to 87,558.72, 120,880.80 and 57,837.12 is: 79,848.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,558.72 : 120,880.80 = 57,837.12 : x
  2. Step 2: Convert to fraction form
    87,558.72/120,880.80 = 57,837.12/x
  3. Step 3: Cross multiply
    87,558.72x = 120,880.80 × 57,837.12
  4. Step 4: Simplify right side
    87,558.72x = 6,991,397,335.30
  5. Step 5: Solve for x
    x = 6,991,397,335.30/87,558.72
  6. Step 6: Final answer
    x = 79,848.10

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1.5x scale

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.