Home / 71,929.49-99,262.80-40,097.70

Finding the Fourth Proportional to 71,929.49, 99,262.80 and 40,097.70

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Solution

The fourth proportional to 71,929.49, 99,262.80 and 40,097.70 is: 55,334.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,929.49 : 99,262.80 = 40,097.70 : x
  2. Step 2: Convert to fraction form
    71,929.49/99,262.80 = 40,097.70/x
  3. Step 3: Cross multiply
    71,929.49x = 99,262.80 × 40,097.70
  4. Step 4: Simplify right side
    71,929.49x = 3,980,209,975.56
  5. Step 5: Solve for x
    x = 3,980,209,975.56/71,929.49
  6. Step 6: Final answer
    x = 55,334.89

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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.