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Finding the Fourth Proportional to 62,980.82, 86,907.10 and 38,777.94

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Solution

The fourth proportional to 62,980.82, 86,907.10 and 38,777.94 is: 53,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,980.82 : 86,907.10 = 38,777.94 : x
  2. Step 2: Convert to fraction form
    62,980.82/86,907.10 = 38,777.94/x
  3. Step 3: Cross multiply
    62,980.82x = 86,907.10 × 38,777.94
  4. Step 4: Simplify right side
    62,980.82x = 3,370,078,309.37
  5. Step 5: Solve for x
    x = 3,370,078,309.37/62,980.82
  6. Step 6: Final answer
    x = 53,509.60

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1.5x scale

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.