Home / 44,129.60-66,136.80-20,434.40

Finding the Fourth Proportional to 44,129.60, 66,136.80 and 20,434.40

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Solution

The fourth proportional to 44,129.60, 66,136.80 and 20,434.40 is: 30,624.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,129.60 : 66,136.80 = 20,434.40 : x
  2. Step 2: Convert to fraction form
    44,129.60/66,136.80 = 20,434.40/x
  3. Step 3: Cross multiply
    44,129.60x = 66,136.80 × 20,434.40
  4. Step 4: Simplify right side
    44,129.60x = 1,351,465,825.92
  5. Step 5: Solve for x
    x = 1,351,465,825.92/44,129.60
  6. Step 6: Final answer
    x = 30,624.93

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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.