Home / 90,659.72-125,058.30-56,609.09

Finding the Fourth Proportional to 90,659.72, 125,058.30 and 56,609.09

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Solution

The fourth proportional to 90,659.72, 125,058.30 and 56,609.09 is: 78,088.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,659.72 : 125,058.30 = 56,609.09 : x
  2. Step 2: Convert to fraction form
    90,659.72/125,058.30 = 56,609.09/x
  3. Step 3: Cross multiply
    90,659.72x = 125,058.30 × 56,609.09
  4. Step 4: Simplify right side
    90,659.72x = 7,079,436,894.79
  5. Step 5: Solve for x
    x = 7,079,436,894.79/90,659.72
  6. Step 6: Final answer
    x = 78,088.01

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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.