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Finding the Fourth Proportional to 86,672.70, 129,911.85 and 36,744.30

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Solution

The fourth proportional to 86,672.70, 129,911.85 and 36,744.30 is: 55,075.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,672.70 : 129,911.85 = 36,744.30 : x
  2. Step 2: Convert to fraction form
    86,672.70/129,911.85 = 36,744.30/x
  3. Step 3: Cross multiply
    86,672.70x = 129,911.85 × 36,744.30
  4. Step 4: Simplify right side
    86,672.70x = 4,773,519,989.96
  5. Step 5: Solve for x
    x = 4,773,519,989.96/86,672.70
  6. Step 6: Final answer
    x = 55,075.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.