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Finding the Fourth Proportional to 86,709.20, 119,658.68 and 46,965.20

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Solution

The fourth proportional to 86,709.20, 119,658.68 and 46,965.20 is: 64,811.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,709.20 : 119,658.68 = 46,965.20 : x
  2. Step 2: Convert to fraction form
    86,709.20/119,658.68 = 46,965.20/x
  3. Step 3: Cross multiply
    86,709.20x = 119,658.68 × 46,965.20
  4. Step 4: Simplify right side
    86,709.20x = 5,619,793,004.82
  5. Step 5: Solve for x
    x = 5,619,793,004.82/86,709.20
  6. Step 6: Final answer
    x = 64,811.96

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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.