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Finding the Fourth Proportional to 86,630.69, 119,551.34 and 50,821.31

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Solution

The fourth proportional to 86,630.69, 119,551.34 and 50,821.31 is: 70,133.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,630.69 : 119,551.34 = 50,821.31 : x
  2. Step 2: Convert to fraction form
    86,630.69/119,551.34 = 50,821.31/x
  3. Step 3: Cross multiply
    86,630.69x = 119,551.34 × 50,821.31
  4. Step 4: Simplify right side
    86,630.69x = 6,075,755,240.35
  5. Step 5: Solve for x
    x = 6,075,755,240.35/86,630.69
  6. Step 6: Final answer
    x = 70,133.99

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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.