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Finding the Fourth Proportional to 86,482.80, 129,652.20 and 36,601.20

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Solution

The fourth proportional to 86,482.80, 129,652.20 and 36,601.20 is: 54,871.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,482.80 : 129,652.20 = 36,601.20 : x
  2. Step 2: Convert to fraction form
    86,482.80/129,652.20 = 36,601.20/x
  3. Step 3: Cross multiply
    86,482.80x = 129,652.20 × 36,601.20
  4. Step 4: Simplify right side
    86,482.80x = 4,745,426,102.64
  5. Step 5: Solve for x
    x = 4,745,426,102.64/86,482.80
  6. Step 6: Final answer
    x = 54,871.33

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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.