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Finding the Fourth Proportional to 52,211.61, 78,317.42 and 49,980.87

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Solution

The fourth proportional to 52,211.61, 78,317.42 and 49,980.87 is: 74,971.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,211.61 : 78,317.42 = 49,980.87 : x
  2. Step 2: Convert to fraction form
    52,211.61/78,317.42 = 49,980.87/x
  3. Step 3: Cross multiply
    52,211.61x = 78,317.42 × 49,980.87
  4. Step 4: Simplify right side
    52,211.61x = 3,914,372,537.85
  5. Step 5: Solve for x
    x = 3,914,372,537.85/52,211.61
  6. Step 6: Final answer
    x = 74,971.31

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1.5x scale

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.