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Finding the Fourth Proportional to 86,499.70, 119,370.45 and 50,710.90

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Solution

The fourth proportional to 86,499.70, 119,370.45 and 50,710.90 is: 69,981.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,499.70 : 119,370.45 = 50,710.90 : x
  2. Step 2: Convert to fraction form
    86,499.70/119,370.45 = 50,710.90/x
  3. Step 3: Cross multiply
    86,499.70x = 119,370.45 × 50,710.90
  4. Step 4: Simplify right side
    86,499.70x = 6,053,382,952.91
  5. Step 5: Solve for x
    x = 6,053,382,952.91/86,499.70
  6. Step 6: Final answer
    x = 69,981.55

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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.