Home / 52,085,587.80-78,128,381.70-49,431,379.80

Finding the Fourth Proportional to 52,085,587.80, 78,128,381.70 and 49,431,379.80

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Solution

The fourth proportional to 52,085,587.80, 78,128,381.70 and 49,431,379.80 is: 74,147,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,085,587.80 : 78,128,381.70 = 49,431,379.80 : x
  2. Step 2: Convert to fraction form
    52,085,587.80/78,128,381.70 = 49,431,379.80/x
  3. Step 3: Cross multiply
    52,085,587.80x = 78,128,381.70 × 49,431,379.80
  4. Step 4: Simplify right side
    52,085,587.80x = 3,861,993,708,972,069.50
  5. Step 5: Solve for x
    x = 3,861,993,708,972,069.50/52,085,587.80
  6. Step 6: Final answer
    x = 74,147,069.70

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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.