Home / 87,660.72-120,971.79-47,374.56

Finding the Fourth Proportional to 87,660.72, 120,971.79 and 47,374.56

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Solution

The fourth proportional to 87,660.72, 120,971.79 and 47,374.56 is: 65,376.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,660.72 : 120,971.79 = 47,374.56 : x
  2. Step 2: Convert to fraction form
    87,660.72/120,971.79 = 47,374.56/x
  3. Step 3: Cross multiply
    87,660.72x = 120,971.79 × 47,374.56
  4. Step 4: Simplify right side
    87,660.72x = 5,730,985,323.66
  5. Step 5: Solve for x
    x = 5,730,985,323.66/87,660.72
  6. Step 6: Final answer
    x = 65,376.89

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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.