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Finding the Fourth Proportional to 77,980.25, 107,485.82 and 60,954.46

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Solution

The fourth proportional to 77,980.25, 107,485.82 and 60,954.46 is: 84,017.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,980.25 : 107,485.82 = 60,954.46 : x
  2. Step 2: Convert to fraction form
    77,980.25/107,485.82 = 60,954.46/x
  3. Step 3: Cross multiply
    77,980.25x = 107,485.82 × 60,954.46
  4. Step 4: Simplify right side
    77,980.25x = 6,551,739,770.85
  5. Step 5: Solve for x
    x = 6,551,739,770.85/77,980.25
  6. Step 6: Final answer
    x = 84,017.93

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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.