Home / 72,619.40-108,929.10-41,457.80

Finding the Fourth Proportional to 72,619.40, 108,929.10 and 41,457.80

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Solution

The fourth proportional to 72,619.40, 108,929.10 and 41,457.80 is: 62,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,619.40 : 108,929.10 = 41,457.80 : x
  2. Step 2: Convert to fraction form
    72,619.40/108,929.10 = 41,457.80/x
  3. Step 3: Cross multiply
    72,619.40x = 108,929.10 × 41,457.80
  4. Step 4: Simplify right side
    72,619.40x = 4,515,960,841.98
  5. Step 5: Solve for x
    x = 4,515,960,841.98/72,619.40
  6. Step 6: Final answer
    x = 62,186.70

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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.