Home / 52,106.81-78,160.01-12,664.04

Finding the Fourth Proportional to 52,106.81, 78,160.01 and 12,664.04

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Solution

The fourth proportional to 52,106.81, 78,160.01 and 12,664.04 is: 18,996.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,106.81 : 78,160.01 = 12,664.04 : x
  2. Step 2: Convert to fraction form
    52,106.81/78,160.01 = 12,664.04/x
  3. Step 3: Cross multiply
    52,106.81x = 78,160.01 × 12,664.04
  4. Step 4: Simplify right side
    52,106.81x = 989,821,493.04
  5. Step 5: Solve for x
    x = 989,821,493.04/52,106.81
  6. Step 6: Final answer
    x = 18,996.01

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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.