Home / 71,778,809.40-107,668,214.10-52,505,215.80

Finding the Fourth Proportional to 71,778,809.40, 107,668,214.10 and 52,505,215.80

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Solution

The fourth proportional to 71,778,809.40, 107,668,214.10 and 52,505,215.80 is: 78,757,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,778,809.40 : 107,668,214.10 = 52,505,215.80 : x
  2. Step 2: Convert to fraction form
    71,778,809.40/107,668,214.10 = 52,505,215.80/x
  3. Step 3: Cross multiply
    71,778,809.40x = 107,668,214.10 × 52,505,215.80
  4. Step 4: Simplify right side
    71,778,809.40x = 5,653,142,816,121,102
  5. Step 5: Solve for x
    x = 5,653,142,816,121,102/71,778,809.40
  6. Step 6: Final answer
    x = 78,757,823.70

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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.