Home / 74,515.50-102,829.96-40,981.50

Finding the Fourth Proportional to 74,515.50, 102,829.96 and 40,981.50

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Solution

The fourth proportional to 74,515.50, 102,829.96 and 40,981.50 is: 56,553.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,515.50 : 102,829.96 = 40,981.50 : x
  2. Step 2: Convert to fraction form
    74,515.50/102,829.96 = 40,981.50/x
  3. Step 3: Cross multiply
    74,515.50x = 102,829.96 × 40,981.50
  4. Step 4: Simplify right side
    74,515.50x = 4,214,126,005.74
  5. Step 5: Solve for x
    x = 4,214,126,005.74/74,515.50
  6. Step 6: Final answer
    x = 56,553.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.