Home / 47,421.40-71,132.10-43,619.80

Finding the Fourth Proportional to 47,421.40, 71,132.10 and 43,619.80

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Solution

The fourth proportional to 47,421.40, 71,132.10 and 43,619.80 is: 65,429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,421.40 : 71,132.10 = 43,619.80 : x
  2. Step 2: Convert to fraction form
    47,421.40/71,132.10 = 43,619.80/x
  3. Step 3: Cross multiply
    47,421.40x = 71,132.10 × 43,619.80
  4. Step 4: Simplify right side
    47,421.40x = 3,102,767,975.58
  5. Step 5: Solve for x
    x = 3,102,767,975.58/47,421.40
  6. Step 6: Final answer
    x = 65,429.70

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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.