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Finding the Fourth Proportional to 86,992.79, 120,058.47 and 48,758.83

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Solution

The fourth proportional to 86,992.79, 120,058.47 and 48,758.83 is: 67,291.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,992.79 : 120,058.47 = 48,758.83 : x
  2. Step 2: Convert to fraction form
    86,992.79/120,058.47 = 48,758.83/x
  3. Step 3: Cross multiply
    86,992.79x = 120,058.47 × 48,758.83
  4. Step 4: Simplify right side
    86,992.79x = 5,853,910,228.64
  5. Step 5: Solve for x
    x = 5,853,910,228.64/86,992.79
  6. Step 6: Final answer
    x = 67,291.91

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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.