Home / 71,552,012.80-107,328,019.20-66,513,164.80

Finding the Fourth Proportional to 71,552,012.80, 107,328,019.20 and 66,513,164.80

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Solution

The fourth proportional to 71,552,012.80, 107,328,019.20 and 66,513,164.80 is: 99,769,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,552,012.80 : 107,328,019.20 = 66,513,164.80 : x
  2. Step 2: Convert to fraction form
    71,552,012.80/107,328,019.20 = 66,513,164.80/x
  3. Step 3: Cross multiply
    71,552,012.80x = 107,328,019.20 × 66,513,164.80
  4. Step 4: Simplify right side
    71,552,012.80x = 7,138,726,228,707,164
  5. Step 5: Solve for x
    x = 7,138,726,228,707,164/71,552,012.80
  6. Step 6: Final answer
    x = 99,769,747.20

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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.