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Finding the Fourth Proportional to 86,611.32, 119,541.42 and 50,820.12

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Solution

The fourth proportional to 86,611.32, 119,541.42 and 50,820.12 is: 70,142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,611.32 : 119,541.42 = 50,820.12 : x
  2. Step 2: Convert to fraction form
    86,611.32/119,541.42 = 50,820.12/x
  3. Step 3: Cross multiply
    86,611.32x = 119,541.42 × 50,820.12
  4. Step 4: Simplify right side
    86,611.32x = 6,075,109,309.37
  5. Step 5: Solve for x
    x = 6,075,109,309.37/86,611.32
  6. Step 6: Final answer
    x = 70,142.21

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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.